diff --git a/src/msw/app.cpp b/src/msw/app.cpp
index a1d526fa5c..22e1baf8df 100644
--- a/src/msw/app.cpp
+++ b/src/msw/app.cpp
@@ -43,7 +43,9 @@
   #include "wx/resource.h"
 #endif
 
+#if wxUSE_DRAG_AND_DROP
 #include <ole2.h>
+#endif
 #include <string.h>
 #include <ctype.h>