diff --git a/src/osx/cocoa/evtloop.mm b/src/osx/cocoa/evtloop.mm
index 5c7b86c471..558cbb2d4b 100644
--- a/src/osx/cocoa/evtloop.mm
+++ b/src/osx/cocoa/evtloop.mm
@@ -28,6 +28,7 @@
 #ifndef WX_PRECOMP
     #include "wx/app.h"
     #include "wx/nonownedwnd.h"
+    #include "wx/dialog.h"
 #endif // WX_PRECOMP
 
 #include "wx/log.h"