diff --git a/tests/configs/tls13-only.h b/tests/configs/tls13-only.h
index 1f212e7d8..38286d1fd 100644
--- a/tests/configs/tls13-only.h
+++ b/tests/configs/tls13-only.h
@@ -34,6 +34,7 @@
 #undef MBEDTLS_SSL_PROTO_DTLS
 #undef MBEDTLS_SSL_DTLS_ANTI_REPLAY
 #undef MBEDTLS_SSL_DTLS_HELLO_VERIFY
+#undef MBEDTLS_SSL_DTLS_SRTP
 #undef MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE
 #undef MBEDTLS_SSL_DTLS_CONNECTION_ID
 #undef MBEDTLS_SSL_DTLS_CONNECTION_ID_COMPAT