diff --git a/lib/valueflow.h b/lib/valueflow.h
index c61110bee..5940a9cd7 100644
--- a/lib/valueflow.h
+++ b/lib/valueflow.h
@@ -22,6 +22,7 @@
 //---------------------------------------------------------------------------
 
 #include <string>
+#include "config.h"
 
 class Token;
 class TokenList;