diff --git a/src/msw/window.cpp b/src/msw/window.cpp
index 903d55ffcf..9dc2e5922d 100644
--- a/src/msw/window.cpp
+++ b/src/msw/window.cpp
@@ -292,7 +292,7 @@ wxBEGIN_PROPERTIES_TABLE(wxWindow)
     // Always constructor Properties first
 
     wxREADONLY_PROPERTY( Parent,wxWindow*, GetParent, EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
-    wxPROPERTY( Id,wxWindowID, SetId, GetId, wxID_ANY, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
+    wxPROPERTY( Id,wxWindowID, SetId, GetId, -1 /*wxID_ANY*/ , 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
     wxPROPERTY( Position,wxPoint, SetPosition , GetPosition, wxDefaultPosition , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // pos
     wxPROPERTY( Size,wxSize, SetSize, GetSize, wxDefaultSize , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // size
     wxPROPERTY( WindowStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style