diff --git a/test/test.cc b/test/test.cc
index 4add35d..7eae015 100644
--- a/test/test.cc
+++ b/test/test.cc
@@ -2288,6 +2288,8 @@ protected:
   {
 #ifdef CPPHTTPLIB_OPENSSL_SUPPORT
     cli_.enable_server_certificate_verification(false);
+#else
+#error no ssl
 #endif
   }