diff --git a/client/cpp.h b/client/cpp.h
index 825915430b..5ea5d41794 100644
--- a/client/cpp.h
+++ b/client/cpp.h
@@ -23,6 +23,7 @@
 #endif
 
 #if !defined(_WIN32) || defined(__CYGWIN32__)
+#include "config.h"
 #include <iostream>
 #include <vector>
 #include <string>