diff --git a/src/mac/carbon/taskbar.cpp b/src/mac/carbon/taskbar.cpp
index ca4d3fe1fe..bc0330d2f8 100644
--- a/src/mac/carbon/taskbar.cpp
+++ b/src/mac/carbon/taskbar.cpp
@@ -18,6 +18,7 @@
 #ifndef WX_PRECOMP
     #include "wx/dcmemory.h"
     #include "wx/menu.h"
+    #include "wx/toplevel.h"
 #endif
 
 #include "wx/mac/private.h"