diff --git a/src/osx/carbon/utilscocoa.mm b/src/osx/carbon/utilscocoa.mm
index dc4248f3c7..5153ed6740 100644
--- a/src/osx/carbon/utilscocoa.mm
+++ b/src/osx/carbon/utilscocoa.mm
@@ -11,6 +11,10 @@
 
 #include "wx/wxprec.h"
 
+#ifndef WX_PRECOMP
+#include "wx/object.h"
+#endif
+
 #if wxOSX_USE_COCOA_OR_CARBON
 #include <Cocoa/Cocoa.h>
 #else