diff --git a/common/xash3d_types.h b/common/xash3d_types.h
index 809da0ad..7ed4ab91 100644
--- a/common/xash3d_types.h
+++ b/common/xash3d_types.h
@@ -2,7 +2,9 @@
 #ifndef XASH_TYPES_H
 #define XASH_TYPES_H
 
-#ifdef _WIN32
+#include "build.h"
+
+#if XASH_WIN32
 #include <wchar.h> // off_t
 #endif // _WIN32