diff --git a/dlls/dwrite/opentype.c b/dlls/dwrite/opentype.c
index 9813676ab0a..0307cd59810 100644
--- a/dlls/dwrite/opentype.c
+++ b/dlls/dwrite/opentype.c
@@ -21,6 +21,7 @@
 #define COBJMACROS
 #define NONAMELESSUNION
 
+#include "config.h"
 #include "dwrite_private.h"
 #include "winternl.h"