diff --git a/test-server/test-client.c b/test-server/test-client.c
index 47b6281f..7d667611 100644
--- a/test-server/test-client.c
+++ b/test-server/test-client.c
@@ -17,6 +17,8 @@
  * may be proprietary.  So unlike the library itself, they are licensed
  * Public Domain.
  */
+ 
+#include "lws_config.h"
 
 #include <stdio.h>
 #include <stdlib.h>