diff --git a/include/wx/aui/auibook.h b/include/wx/aui/auibook.h
index cb8bbf0e98..442504b8e6 100644
--- a/include/wx/aui/auibook.h
+++ b/include/wx/aui/auibook.h
@@ -472,7 +472,6 @@ protected:
     void OnSetFocus(wxFocusEvent& event);
     void OnKillFocus(wxFocusEvent& event);
     void OnChar(wxKeyEvent& event);
-    void OnLeftDClick(wxMouseEvent& evt);
 #endif
     void OnMotion(wxMouseEvent& evt);
     void OnLeaveWindow(wxMouseEvent& evt);