diff --git a/src/core/net/tcp6.hpp b/src/core/net/tcp6.hpp
index 10c597823..510ed85bb 100644
--- a/src/core/net/tcp6.hpp
+++ b/src/core/net/tcp6.hpp
@@ -36,6 +36,8 @@
 
 #include "openthread-core-config.h"
 
+#if OPENTHREAD_CONFIG_TCP_ENABLE
+
 #include <openthread/tcp.h>
 
 #include "common/as_core_type.hpp"
@@ -592,4 +594,6 @@ DefineCoreType(otTcpListener, Ip6::Tcp::Listener);
 
 } // namespace ot
 
+#endif // OPENTHREAD_CONFIG_TCP_ENABLE
+
 #endif // OT_CORE_NET_TCP6_HPP_
diff --git a/src/core/net/tcp6_ext.hpp b/src/core/net/tcp6_ext.hpp
index ffa187201..e9f7ab18d 100644
--- a/src/core/net/tcp6_ext.hpp
+++ b/src/core/net/tcp6_ext.hpp
@@ -36,6 +36,8 @@
 
 #include "openthread-core-config.h"
 
+#if OPENTHREAD_CONFIG_TCP_ENABLE
+
 #include <openthread/tcp_ext.h>
 
 #include "net/tcp6.hpp"
@@ -130,4 +132,6 @@ DefineCoreType(otTcpCircularSendBuffer, Ip6::TcpCircularSendBuffer);
 
 } // namespace ot
 
+#endif // OPENTHREAD_CONFIG_TCP_ENABLE
+
 #endif // OT_CORE_NET_TCP6_EXT_HPP_
diff --git a/tests/toranj/openthread-core-toranj-config.h b/tests/toranj/openthread-core-toranj-config.h
index 9356dc126..67fd1774f 100644
--- a/tests/toranj/openthread-core-toranj-config.h
+++ b/tests/toranj/openthread-core-toranj-config.h
@@ -141,6 +141,8 @@
 
 #define OPENTHREAD_CONFIG_IP6_SLAAC_DEPRECATION_INTERVAL 30
 
+#define OPENTHREAD_CONFIG_TCP_ENABLE 0
+
 #define OPENTHREAD_CONFIG_MAC_FILTER_ENABLE 1
 
 #define OPENTHREAD_CONFIG_MAC_FILTER_SIZE 80