diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 8a6723e5e..07424276d 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -11398,6 +11398,7 @@ run_test    "TLS 1.3: Server side check, no server certificate available" \
             -s "tls13 server state: MBEDTLS_SSL_SERVER_CERTIFICATE" \
             -s "No certificate available."
 
+requires_gnutls_tls1_3
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_DEBUG_C
@@ -11421,6 +11422,7 @@ run_test    "TLS 1.3: Server side check - openssl with sni" \
             -s "=> parse client hello" \
             -s "<= parse client hello"
 
+requires_gnutls_tls1_3
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_DEBUG_C