diff --git a/source/mijin/util/winundef.hpp b/source/mijin/util/winundef.hpp
index 715fc40..225136a 100644
--- a/source/mijin/util/winundef.hpp
+++ b/source/mijin/util/winundef.hpp
@@ -26,3 +26,7 @@
 #if defined(DEBUG)
 #undef DEBUG
 #endif
+
+#if defined(VOID)
+#undef VOID
+#endif