diff --git a/src/osx/cocoa/listbox.mm b/src/osx/cocoa/listbox.mm
index 3d813af532..0eb49dd569 100644
--- a/src/osx/cocoa/listbox.mm
+++ b/src/osx/cocoa/listbox.mm
@@ -26,8 +26,6 @@
 
 #include "wx/osx/private.h"
 
-#include <vector>
-
 // forward decls
 
 class wxListWidgetCocoaImpl;