diff --git a/examples/platforms/cc2538/flash.c b/examples/platforms/cc2538/flash.c
index a57fa4776..7454047d8 100644
--- a/examples/platforms/cc2538/flash.c
+++ b/examples/platforms/cc2538/flash.c
@@ -40,7 +40,6 @@
 #include "rom-utility.h"
 #include "utils/code_utils.h"
 #include "utils/flash.h"
-#include "utils/wrap_string.h"
 
 #define FLASH_CTRL_FCTL_BUSY 0x00000080
 
diff --git a/examples/platforms/qpg6095/radio.c b/examples/platforms/qpg6095/radio.c
index 6e8fee14a..61a82a2ac 100644
--- a/examples/platforms/qpg6095/radio.c
+++ b/examples/platforms/qpg6095/radio.c
@@ -33,6 +33,9 @@
  */
 
 #include "radio_qorvo.h"
+
+#include <string.h>
+
 #include <common/logging.hpp>
 #include <openthread/platform/diag.h>
 #include <openthread/platform/radio.h>
diff --git a/examples/platforms/utils/settings_flash.c b/examples/platforms/utils/settings_flash.c
index b3a41a8f0..a75ea0771 100644
--- a/examples/platforms/utils/settings_flash.c
+++ b/examples/platforms/utils/settings_flash.c
@@ -37,12 +37,12 @@
 #include <assert.h>
 #include <stddef.h>
 #include <stdlib.h>
+#include <string.h>
 
 #include <openthread/instance.h>
 #include <openthread/platform/settings.h>
 
 #include "utils/code_utils.h"
-#include "utils/wrap_string.h"
 
 #include "flash.h"
 
diff --git a/examples/platforms/utils/soft_source_match_table.c b/examples/platforms/utils/soft_source_match_table.c
index 65fa372a9..67fbdcad7 100644
--- a/examples/platforms/utils/soft_source_match_table.c
+++ b/examples/platforms/utils/soft_source_match_table.c
@@ -37,6 +37,7 @@
 #include "utils/soft_source_match_table.h"
 
 #include <stdlib.h>
+#include <string.h>
 
 #include "common/logging.hpp"
 #include "utils/code_utils.h"
diff --git a/src/cli/cli.cpp b/src/cli/cli.cpp
index 4d770161b..d446bc35d 100644
--- a/src/cli/cli.cpp
+++ b/src/cli/cli.cpp
@@ -37,7 +37,6 @@
 #include <stdlib.h>
 #include "mac/channel_mask.hpp"
 #include "utils/parse_cmdline.hpp"
-#include "utils/wrap_string.h"
 
 #include <openthread/icmp6.h>
 #include <openthread/link.h>
@@ -83,6 +82,7 @@
 
 #include "cli_server.hpp"
 #include "common/encoding.hpp"
+#include "common/string.hpp"
 
 using ot::Encoding::BigEndian::HostSwap16;
 using ot::Encoding::BigEndian::HostSwap32;
diff --git a/src/cli/cli_console.cpp b/src/cli/cli_console.cpp
index ab626b5e4..e2da74ad8 100644
--- a/src/cli/cli_console.cpp
+++ b/src/cli/cli_console.cpp
@@ -36,7 +36,6 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include "utils/wrap_string.h"
 
 #include "cli/cli.hpp"
 #include "common/instance.hpp"
diff --git a/src/cli/cli_dataset.cpp b/src/cli/cli_dataset.cpp
index c497a207a..36bf1348d 100644
--- a/src/cli/cli_dataset.cpp
+++ b/src/cli/cli_dataset.cpp
@@ -35,7 +35,6 @@
 
 #include <stdio.h>
 #include <stdlib.h>
-#include "utils/wrap_string.h"
 
 #include <openthread/dataset.h>
 #include <openthread/dataset_ftd.h>
diff --git a/src/cli/cli_uart.cpp b/src/cli/cli_uart.cpp
index b4bdc0b2c..a2bf5bf1f 100644
--- a/src/cli/cli_uart.cpp
+++ b/src/cli/cli_uart.cpp
@@ -48,7 +48,6 @@
 #include "common/new.hpp"
 #include "common/tasklet.hpp"
 #include "utils/static_assert.hpp"
-#include "utils/wrap_string.h"
 
 #if OPENTHREAD_CONFIG_ENABLE_DEBUG_UART
 #include <openthread/platform/debug_uart.h>
diff --git a/src/core/Makefile.am b/src/core/Makefile.am
index 81f0c9a2e..9a493aec7 100644
--- a/src/core/Makefile.am
+++ b/src/core/Makefile.am
@@ -441,7 +441,6 @@ HEADERS_COMMON                             = \
     utils/parse_cmdline.hpp                  \
     utils/slaac_address.hpp                  \
     utils/static_assert.hpp                  \
-    utils/wrap_string.h                      \
     $(NULL)
 
 noinst_HEADERS                             = \
diff --git a/src/core/coap/coap_message.hpp b/src/core/coap/coap_message.hpp
index 7446b2fc3..f34310086 100644
--- a/src/core/coap/coap_message.hpp
+++ b/src/core/coap/coap_message.hpp
@@ -36,8 +36,6 @@
 
 #include "openthread-core-config.h"
 
-#include "utils/wrap_string.h"
-
 #include <openthread/coap.h>
 
 #include "common/code_utils.hpp"
diff --git a/src/core/common/debug.hpp b/src/core/common/debug.hpp
index 387c6fd95..1c3f3d477 100644
--- a/src/core/common/debug.hpp
+++ b/src/core/common/debug.hpp
@@ -38,7 +38,6 @@
 
 #include <ctype.h>
 #include <stdio.h>
-#include "utils/wrap_string.h"
 
 #if defined(OPENTHREAD_TARGET_DARWIN) || defined(OPENTHREAD_TARGET_LINUX)
 
diff --git a/src/core/common/logging.hpp b/src/core/common/logging.hpp
index ed0e3bf1b..d5d886c67 100644
--- a/src/core/common/logging.hpp
+++ b/src/core/common/logging.hpp
@@ -38,7 +38,6 @@
 
 #include <ctype.h>
 #include <stdio.h>
-#include "utils/wrap_string.h"
 
 #include <openthread/logging.h>
 #include <openthread/platform/logging.h>
diff --git a/src/core/common/message.hpp b/src/core/common/message.hpp
index 837f29c81..97f7c9809 100644
--- a/src/core/common/message.hpp
+++ b/src/core/common/message.hpp
@@ -38,8 +38,6 @@
 
 #include <stdint.h>
 
-#include "utils/wrap_string.h"
-
 #include <openthread/message.h>
 #include <openthread/platform/messagepool.h>
 
diff --git a/src/core/common/settings.cpp b/src/core/common/settings.cpp
index 473cdc4d7..9956d918f 100644
--- a/src/core/common/settings.cpp
+++ b/src/core/common/settings.cpp
@@ -35,8 +35,6 @@
 
 #include <openthread/platform/settings.h>
 
-#include "utils/wrap_string.h"
-
 #include "common/code_utils.hpp"
 #include "common/instance.hpp"
 #include "common/logging.hpp"
diff --git a/src/core/common/string.hpp b/src/core/common/string.hpp
index 0db897f60..b7619bfaa 100644
--- a/src/core/common/string.hpp
+++ b/src/core/common/string.hpp
@@ -39,7 +39,6 @@
 #include <stdarg.h>
 #include <stdint.h>
 #include <stdio.h>
-#include "utils/wrap_string.h"
 
 #include <openthread/error.h>
 
diff --git a/src/core/common/tlvs.hpp b/src/core/common/tlvs.hpp
index 1bfa330f1..093192909 100644
--- a/src/core/common/tlvs.hpp
+++ b/src/core/common/tlvs.hpp
@@ -36,8 +36,6 @@
 
 #include "openthread-core-config.h"
 
-#include "utils/wrap_string.h"
-
 #include <openthread/error.h>
 #include <openthread/platform/toolchain.h>
 
diff --git a/src/core/crypto/pbkdf2_cmac.cpp b/src/core/crypto/pbkdf2_cmac.cpp
index 992cbf85d..ef14ee189 100644
--- a/src/core/crypto/pbkdf2_cmac.cpp
+++ b/src/core/crypto/pbkdf2_cmac.cpp
@@ -33,8 +33,9 @@
 
 #include "pbkdf2_cmac.h"
 
+#include <string.h>
+
 #include "common/debug.hpp"
-#include "utils/wrap_string.h"
 
 #include <mbedtls/cmac.h>
 
diff --git a/src/core/diags/factory_diags.hpp b/src/core/diags/factory_diags.hpp
index 49f0a7ef8..56c31128a 100644
--- a/src/core/diags/factory_diags.hpp
+++ b/src/core/diags/factory_diags.hpp
@@ -36,10 +36,11 @@
 
 #include "openthread-core-config.h"
 
+#include <string.h>
+
 #include <openthread/platform/radio.h>
 
 #include "common/locator.hpp"
-#include "utils/wrap_string.h"
 
 namespace ot {
 namespace FactoryDiags {
diff --git a/src/core/mac/mac.cpp b/src/core/mac/mac.cpp
index 5e6588808..ebc68f92f 100644
--- a/src/core/mac/mac.cpp
+++ b/src/core/mac/mac.cpp
@@ -34,7 +34,6 @@
 #include "mac.hpp"
 
 #include <stdio.h>
-#include "utils/wrap_string.h"
 
 #include "common/code_utils.hpp"
 #include "common/debug.hpp"
diff --git a/src/core/mac/mac_filter.cpp b/src/core/mac/mac_filter.cpp
index 8c0262474..82703c3c4 100644
--- a/src/core/mac/mac_filter.cpp
+++ b/src/core/mac/mac_filter.cpp
@@ -33,8 +33,6 @@
 
 #include "mac_filter.hpp"
 
-#include "utils/wrap_string.h"
-
 #include "common/code_utils.hpp"
 
 #if OPENTHREAD_CONFIG_MAC_FILTER_ENABLE
diff --git a/src/core/mac/mac_frame.hpp b/src/core/mac/mac_frame.hpp
index 5259dc14d..3be2c3f67 100644
--- a/src/core/mac/mac_frame.hpp
+++ b/src/core/mac/mac_frame.hpp
@@ -39,8 +39,6 @@
 #include <limits.h>
 #include <stdint.h>
 
-#include "utils/wrap_string.h"
-
 #include "common/encoding.hpp"
 #include "mac/mac_types.hpp"
 
diff --git a/src/core/mac/mac_types.cpp b/src/core/mac/mac_types.cpp
index 643a2cc41..c2ef35259 100644
--- a/src/core/mac/mac_types.cpp
+++ b/src/core/mac/mac_types.cpp
@@ -34,10 +34,10 @@
 #include "mac_types.hpp"
 
 #include <stdio.h>
-#include "utils/wrap_string.h"
 
 #include "common/code_utils.hpp"
 #include "common/random.hpp"
+#include "common/string.hpp"
 
 namespace ot {
 namespace Mac {
diff --git a/src/core/mac/mac_types.hpp b/src/core/mac/mac_types.hpp
index 6be11de13..cc6ed17ba 100644
--- a/src/core/mac/mac_types.hpp
+++ b/src/core/mac/mac_types.hpp
@@ -37,8 +37,7 @@
 #include "openthread-core-config.h"
 
 #include <stdint.h>
-
-#include "utils/wrap_string.h"
+#include <string.h>
 
 #include <openthread/link.h>
 
diff --git a/src/core/meshcop/commissioner.cpp b/src/core/meshcop/commissioner.cpp
index 46dc70887..06578bd74 100644
--- a/src/core/meshcop/commissioner.cpp
+++ b/src/core/meshcop/commissioner.cpp
@@ -34,13 +34,13 @@
 #include "commissioner.hpp"
 
 #include <stdio.h>
-#include "utils/wrap_string.h"
 
 #include "coap/coap_message.hpp"
 #include "common/encoding.hpp"
 #include "common/instance.hpp"
 #include "common/locator-getters.hpp"
 #include "common/logging.hpp"
+#include "common/string.hpp"
 #include "crypto/pbkdf2_cmac.h"
 #include "meshcop/joiner_router.hpp"
 #include "meshcop/meshcop.hpp"
diff --git a/src/core/meshcop/meshcop_tlvs.hpp b/src/core/meshcop/meshcop_tlvs.hpp
index 1e137e8ef..eb7c53a12 100644
--- a/src/core/meshcop/meshcop_tlvs.hpp
+++ b/src/core/meshcop/meshcop_tlvs.hpp
@@ -37,8 +37,6 @@
 
 #include "openthread-core-config.h"
 
-#include "utils/wrap_string.h"
-
 #include <openthread/commissioner.h>
 #include <openthread/dataset.h>
 #include <openthread/platform/radio.h>
@@ -46,6 +44,7 @@
 #include "common/crc16.hpp"
 #include "common/encoding.hpp"
 #include "common/message.hpp"
+#include "common/string.hpp"
 #include "common/tlvs.hpp"
 #include "mac/mac_types.hpp"
 #include "meshcop/timestamp.hpp"
diff --git a/src/core/meshcop/timestamp.cpp b/src/core/meshcop/timestamp.cpp
index 77fc9899f..47eef7537 100644
--- a/src/core/meshcop/timestamp.cpp
+++ b/src/core/meshcop/timestamp.cpp
@@ -33,8 +33,6 @@
 
 #include "timestamp.hpp"
 
-#include "utils/wrap_string.h"
-
 namespace ot {
 namespace MeshCoP {
 
diff --git a/src/core/net/dns_client.cpp b/src/core/net/dns_client.cpp
index 60d6860ae..bb928ed80 100644
--- a/src/core/net/dns_client.cpp
+++ b/src/core/net/dns_client.cpp
@@ -28,8 +28,6 @@
 
 #include "dns_client.hpp"
 
-#include "utils/wrap_string.h"
-
 #include "common/code_utils.hpp"
 #include "common/debug.hpp"
 #include "common/instance.hpp"
diff --git a/src/core/net/dns_headers.hpp b/src/core/net/dns_headers.hpp
index 6d863b9c4..2c0128e5f 100644
--- a/src/core/net/dns_headers.hpp
+++ b/src/core/net/dns_headers.hpp
@@ -36,8 +36,6 @@
 
 #include "openthread-core-config.h"
 
-#include "utils/wrap_string.h"
-
 #include "common/encoding.hpp"
 #include "common/message.hpp"
 
diff --git a/src/core/net/icmp6.cpp b/src/core/net/icmp6.cpp
index 9d9b48b9d..754000b5d 100644
--- a/src/core/net/icmp6.cpp
+++ b/src/core/net/icmp6.cpp
@@ -33,8 +33,6 @@
 
 #include "icmp6.hpp"
 
-#include "utils/wrap_string.h"
-
 #include "common/code_utils.hpp"
 #include "common/debug.hpp"
 #include "common/instance.hpp"
diff --git a/src/core/net/ip6_address.cpp b/src/core/net/ip6_address.cpp
index bd9450430..4af51237e 100644
--- a/src/core/net/ip6_address.cpp
+++ b/src/core/net/ip6_address.cpp
@@ -34,7 +34,6 @@
 #include "ip6_address.hpp"
 
 #include <stdio.h>
-#include "utils/wrap_string.h"
 
 #include "common/code_utils.hpp"
 #include "common/encoding.hpp"
diff --git a/src/core/net/sntp_client.cpp b/src/core/net/sntp_client.cpp
index d42bc96f5..0376f0b46 100644
--- a/src/core/net/sntp_client.cpp
+++ b/src/core/net/sntp_client.cpp
@@ -28,8 +28,6 @@
 
 #include "sntp_client.hpp"
 
-#include "utils/wrap_string.h"
-
 #include "common/code_utils.hpp"
 #include "common/debug.hpp"
 #include "common/instance.hpp"
diff --git a/src/core/thread/link_quality.cpp b/src/core/thread/link_quality.cpp
index bec2727c5..90f246fa4 100644
--- a/src/core/thread/link_quality.cpp
+++ b/src/core/thread/link_quality.cpp
@@ -37,7 +37,6 @@
 
 #include "common/code_utils.hpp"
 #include "common/instance.hpp"
-#include "utils/wrap_string.h"
 
 namespace ot {
 
diff --git a/src/core/thread/mle_router_ftd.hpp b/src/core/thread/mle_router_ftd.hpp
index e2e9d9680..bc10717fd 100644
--- a/src/core/thread/mle_router_ftd.hpp
+++ b/src/core/thread/mle_router_ftd.hpp
@@ -36,8 +36,6 @@
 
 #include "openthread-core-config.h"
 
-#include "utils/wrap_string.h"
-
 #include <openthread/thread_ftd.h>
 
 #include "coap/coap.hpp"
diff --git a/src/core/thread/mle_router_mtd.hpp b/src/core/thread/mle_router_mtd.hpp
index 7c22e561d..d0df82685 100644
--- a/src/core/thread/mle_router_mtd.hpp
+++ b/src/core/thread/mle_router_mtd.hpp
@@ -36,8 +36,6 @@
 
 #include "openthread-core-config.h"
 
-#include "utils/wrap_string.h"
-
 #include "thread/child_table.hpp"
 #include "thread/mle.hpp"
 #include "thread/mle_tlvs.hpp"
diff --git a/src/core/thread/mle_tlvs.hpp b/src/core/thread/mle_tlvs.hpp
index b69d985e3..102657e06 100644
--- a/src/core/thread/mle_tlvs.hpp
+++ b/src/core/thread/mle_tlvs.hpp
@@ -36,8 +36,6 @@
 
 #include "openthread-core-config.h"
 
-#include "utils/wrap_string.h"
-
 #include "common/encoding.hpp"
 #include "common/message.hpp"
 #include "common/tlvs.hpp"
diff --git a/src/core/thread/network_data_tlvs.hpp b/src/core/thread/network_data_tlvs.hpp
index 82067225d..7df17a6a8 100644
--- a/src/core/thread/network_data_tlvs.hpp
+++ b/src/core/thread/network_data_tlvs.hpp
@@ -36,8 +36,6 @@
 
 #include "openthread-core-config.h"
 
-#include "utils/wrap_string.h"
-
 #include "common/encoding.hpp"
 #include "net/ip6_address.hpp"
 
diff --git a/src/core/thread/network_diagnostic_tlvs.hpp b/src/core/thread/network_diagnostic_tlvs.hpp
index 773b3027a..1dc0bcc89 100644
--- a/src/core/thread/network_diagnostic_tlvs.hpp
+++ b/src/core/thread/network_diagnostic_tlvs.hpp
@@ -36,8 +36,6 @@
 
 #include "openthread-core-config.h"
 
-#include "utils/wrap_string.h"
-
 #include <openthread/thread.h>
 
 #include "common/encoding.hpp"
diff --git a/src/core/utils/slaac_address.cpp b/src/core/utils/slaac_address.cpp
index a2d94d3c7..e86a115ba 100644
--- a/src/core/utils/slaac_address.cpp
+++ b/src/core/utils/slaac_address.cpp
@@ -33,8 +33,6 @@
 
 #include "slaac_address.hpp"
 
-#include "utils/wrap_string.h"
-
 #include "common/code_utils.hpp"
 #include "common/instance.hpp"
 #include "common/locator-getters.hpp"
diff --git a/src/ncp/hdlc.hpp b/src/ncp/hdlc.hpp
index c1f03c2aa..9e88af2b7 100644
--- a/src/ncp/hdlc.hpp
+++ b/src/ncp/hdlc.hpp
@@ -42,7 +42,6 @@
 #include "common/code_utils.hpp"
 #include "common/debug.hpp"
 #include "common/encoding.hpp"
-#include "utils/wrap_string.h"
 
 namespace ot {
 
diff --git a/src/ncp/ncp_buffer.cpp b/src/ncp/ncp_buffer.cpp
index 6cd22fe7f..2a63f5bd4 100644
--- a/src/ncp/ncp_buffer.cpp
+++ b/src/ncp/ncp_buffer.cpp
@@ -34,7 +34,6 @@
 
 #include "common/code_utils.hpp"
 #include "common/debug.hpp"
-#include "utils/wrap_string.h"
 
 namespace ot {
 namespace Ncp {
diff --git a/src/ncp/spinel_encoder.cpp b/src/ncp/spinel_encoder.cpp
index 75657aa59..332a04b57 100644
--- a/src/ncp/spinel_encoder.cpp
+++ b/src/ncp/spinel_encoder.cpp
@@ -32,8 +32,9 @@
 
 #include "spinel_encoder.hpp"
 
+#include <string.h>
+
 #include "common/code_utils.hpp"
-#include "utils/wrap_string.h"
 
 namespace ot {
 namespace Ncp {
diff --git a/src/ncp/spinel_platform.h b/src/ncp/spinel_platform.h
index a791c8998..d0263cb31 100644
--- a/src/ncp/spinel_platform.h
+++ b/src/ncp/spinel_platform.h
@@ -56,7 +56,6 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
-
-#include "utils/wrap_string.h"
+#include <string.h>
 
 #endif // SPINEL_PLATFORM_OPENTHREAD_H_
diff --git a/tests/unit/test_aes.cpp b/tests/unit/test_aes.cpp
index 61e856de5..b8027af6c 100644
--- a/tests/unit/test_aes.cpp
+++ b/tests/unit/test_aes.cpp
@@ -30,7 +30,6 @@
 
 #include "common/debug.hpp"
 #include "crypto/aes_ccm.hpp"
-#include "utils/wrap_string.h"
 
 #include "test_platform.h"
 #include "test_util.h"
diff --git a/tests/unit/test_heap.cpp b/tests/unit/test_heap.cpp
index a97d08922..f95a6b2fe 100644
--- a/tests/unit/test_heap.cpp
+++ b/tests/unit/test_heap.cpp
@@ -34,7 +34,6 @@
 
 #include "common/debug.hpp"
 #include "crypto/aes_ccm.hpp"
-#include "utils/wrap_string.h"
 
 #include "test_platform.h"
 #include "test_util.h"
diff --git a/tests/unit/test_hmac_sha256.cpp b/tests/unit/test_hmac_sha256.cpp
index fde654c41..35fcb58a5 100644
--- a/tests/unit/test_hmac_sha256.cpp
+++ b/tests/unit/test_hmac_sha256.cpp
@@ -30,7 +30,6 @@
 
 #include "common/debug.hpp"
 #include "crypto/hmac_sha256.hpp"
-#include "utils/wrap_string.h"
 
 #include "test_platform.h"
 #include "test_util.h"
diff --git a/tests/unit/test_ip6_address.cpp b/tests/unit/test_ip6_address.cpp
index 81340e827..ffbf8548d 100644
--- a/tests/unit/test_ip6_address.cpp
+++ b/tests/unit/test_ip6_address.cpp
@@ -27,7 +27,6 @@
  */
 
 #include "net/ip6_address.hpp"
-#include "utils/wrap_string.h"
 
 #include "test_util.h"
 
diff --git a/tests/unit/test_link_quality.cpp b/tests/unit/test_link_quality.cpp
index d86a0fd0a..f352f2c15 100644
--- a/tests/unit/test_link_quality.cpp
+++ b/tests/unit/test_link_quality.cpp
@@ -28,7 +28,6 @@
 
 #include "common/code_utils.hpp"
 #include "thread/link_quality.hpp"
-#include "utils/wrap_string.h"
 
 #include "test_platform.h"
 #include "test_util.h"
diff --git a/tests/unit/test_mac_frame.cpp b/tests/unit/test_mac_frame.cpp
index d55fcd148..e573645c2 100644
--- a/tests/unit/test_mac_frame.cpp
+++ b/tests/unit/test_mac_frame.cpp
@@ -31,7 +31,6 @@
 #include "mac/mac.hpp"
 #include "mac/mac_frame.hpp"
 #include "radio/radio.hpp"
-#include "utils/wrap_string.h"
 
 #include "test_platform.h"
 #include "test_util.h"
diff --git a/tests/unit/test_message.cpp b/tests/unit/test_message.cpp
index f078eaaec..80cf7d8bf 100644
--- a/tests/unit/test_message.cpp
+++ b/tests/unit/test_message.cpp
@@ -29,7 +29,6 @@
 #include "common/debug.hpp"
 #include "common/instance.hpp"
 #include "common/message.hpp"
-#include "utils/wrap_string.h"
 
 #include "test_platform.h"
 #include "test_util.h"
diff --git a/tests/unit/test_message_queue.cpp b/tests/unit/test_message_queue.cpp
index 0f4dece11..911b07c5a 100644
--- a/tests/unit/test_message_queue.cpp
+++ b/tests/unit/test_message_queue.cpp
@@ -35,7 +35,6 @@
 #include "common/debug.hpp"
 #include "common/instance.hpp"
 #include "common/message.hpp"
-#include "utils/wrap_string.h"
 
 #include "test_util.h"
 
diff --git a/tests/unit/test_priority_queue.cpp b/tests/unit/test_priority_queue.cpp
index 1568df37c..914db28e4 100644
--- a/tests/unit/test_priority_queue.cpp
+++ b/tests/unit/test_priority_queue.cpp
@@ -31,7 +31,6 @@
 #include "common/debug.hpp"
 #include "common/instance.hpp"
 #include "common/message.hpp"
-#include "utils/wrap_string.h"
 
 #include "test_platform.h"
 #include "test_util.h"
diff --git a/tests/unit/test_pskc.cpp b/tests/unit/test_pskc.cpp
index bc0d3cb43..e80d0cdb3 100644
--- a/tests/unit/test_pskc.cpp
+++ b/tests/unit/test_pskc.cpp
@@ -29,7 +29,6 @@
 
 #include "common/logging.hpp"
 #include "meshcop/commissioner.hpp"
-#include "utils/wrap_string.h"
 
 #include "test_platform.h"
 #include "test_util.h"