diff --git a/lib/vtls/vtls.c b/lib/vtls/vtls.c
index 33e209dc12..38637771e9 100644
--- a/lib/vtls/vtls.c
+++ b/lib/vtls/vtls.c
@@ -99,6 +99,7 @@ Curl_ssl_config_matches(struct ssl_config_data* data,
      (data->verifyhost == needle->verifyhost) &&
      safe_strequal(data->CApath, needle->CApath) &&
      safe_strequal(data->CAfile, needle->CAfile) &&
+     safe_strequal(data->clientcert, needle->clientcert) &&
      safe_strequal(data->random_file, needle->random_file) &&
      safe_strequal(data->egdsocket, needle->egdsocket) &&
      safe_strequal(data->cipher_list, needle->cipher_list))