diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 447a30de68..98dc61e60b 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -13723,7 +13723,6 @@ run_test    "Handshake defragmentation on server: len=32, TLS 1.2 ClientHello (u
 
 # Test server-side buffer resizing with fragmented handshake on TLS1.2
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
-requires_certificate_authentication
 requires_config_enabled MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
 requires_config_enabled MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
 requires_max_content_len 1025
@@ -13740,7 +13739,6 @@ run_test    "Handshake defragmentation on server: len=256, buffer resizing with
 
 # Test client-initiated renegotiation with fragmented handshake on TLS1.2
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
-requires_certificate_authentication
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 run_test    "Handshake defragmentation on server: len=512, client-initiated renegotation" \
             "$P_SRV debug_level=4 exchanges=2 renegotiation=1 auth_mode=required" \
@@ -13757,7 +13755,6 @@ run_test    "Handshake defragmentation on server: len=512, client-initiated rene
             -s "Consume: waiting for more handshake fragments 512/" \
 
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
-requires_certificate_authentication
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 run_test    "Handshake defragmentation on server: len=256, client-initiated renegotation" \
             "$P_SRV debug_level=4 exchanges=2 renegotiation=1 auth_mode=required" \
@@ -13775,7 +13772,6 @@ run_test    "Handshake defragmentation on server: len=256, client-initiated rene
 
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
-requires_certificate_authentication
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 run_test    "Handshake defragmentation on server: len=128, client-initiated renegotation" \
             "$P_SRV debug_level=4 exchanges=2 renegotiation=1 auth_mode=required" \
@@ -13810,7 +13806,6 @@ run_test    "Handshake defragmentation on server: len=4, client-initiated renego
 
 # Test server-initiated renegotiation with fragmented handshake on TLS1.2
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
-requires_certificate_authentication
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 run_test    "Handshake defragmentation on client: len=512, server-initiated renegotation" \
             "$O_NEXT_SRV -tls1_2 -split_send_frag 512 -legacy_renegotiation -cert $DATA_FILES_PATH/server5.crt -key $DATA_FILES_PATH/server5.key" \
@@ -13831,7 +13826,6 @@ run_test    "Handshake defragmentation on client: len=512, server-initiated rene
 # Splitting messages during the renegotiation process requires a deeper
 # stack to accommodate the increased processing complexity.
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
-requires_certificate_authentication
 requires_config_enabled MBEDTLS_SSL_RENEGOTIATION
 run_test    "Handshake defragmentation on client: len=256, server-initiated renegotation" \
             "$O_NEXT_SRV -tls1_2 -split_send_frag 256 -legacy_renegotiation -cert $DATA_FILES_PATH/server5.crt -key $DATA_FILES_PATH/server5.key" \