diff --git a/tests/scripts/generate_tls13_compat_tests.py b/tests/scripts/generate_tls13_compat_tests.py
index 7819a87..0e94af6 100755
--- a/tests/scripts/generate_tls13_compat_tests.py
+++ b/tests/scripts/generate_tls13_compat_tests.py
@@ -357,7 +357,8 @@
 
     def pre_checks(self):
         ret = ['requires_config_enabled MBEDTLS_DEBUG_C',
-               'requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3']
+               'requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3',
+               'requires_key_exchange_with_cert_in_tls13_enabled']
 
         if self._compat_mode:
             ret += ['requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE']