diff --git a/src/generic/renderg.cpp b/src/generic/renderg.cpp
index 04f7b719c3..e1b8f588e6 100644
--- a/src/generic/renderg.cpp
+++ b/src/generic/renderg.cpp
@@ -42,6 +42,11 @@
     #include "wx/osx/private.h"
 #endif
 
+#ifdef __WINDOWS__
+    // We only need it to get ::MulDiv() declaration, used by wxMulDivInt32().
+    #include "wx/msw/wrapwin.h"
+#endif
+
 // ----------------------------------------------------------------------------
 // wxRendererGeneric: our wxRendererNative implementation
 // ----------------------------------------------------------------------------