diff --git a/include/wx/object.h b/include/wx/object.h
index e66613c3dc..dfb88a48c6 100644
--- a/include/wx/object.h
+++ b/include/wx/object.h
@@ -17,7 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#include "wx/defs.h"
 #include "wx/memory.h"
 
 class WXDLLIMPEXP_BASE wxObject;
@@ -471,13 +470,16 @@ public:
     // destroy a reference
     void UnRef();
 
+    // Make sure this object has only one reference
+    void UnShare() { AllocExclusive(); }
+
 protected:
     // ensure that our data is not shared with anybody else: if we have no
     // data, it is created using CreateRefData() below, if we have shared data
     // it is copied using CloneRefData(), otherwise nothing is done
     void AllocExclusive();
 
-    // both methods must be implemented if Unshare() is used, not pure virtual
+    // both methods must be implemented if AllocExclusive() is used, not pure virtual
     // only because of the backwards compatibility reasons
 
     // create a new m_refData