diff --git a/include/wx/msw/toplevel.h b/include/wx/msw/toplevel.h
index e1681e0568..1af76489f9 100644
--- a/include/wx/msw/toplevel.h
+++ b/include/wx/msw/toplevel.h
@@ -142,8 +142,9 @@ protected:
 
     // helper of SetIcons(): calls gets the icon with the size specified by the
     // given system metrics (SM_C{X|Y}[SM]ICON) from the bundle and sets it
-    // using WM_SETICON with the specified wParam (ICOM_SMALL or ICON_BIG)
-    void DoSelectAndSetIcon(const wxIconBundle& icons, int smX, int smY, int i);
+    // using WM_SETICON with the specified wParam (ICOM_SMALL or ICON_BIG);
+    // returns true if the icon was set
+    bool DoSelectAndSetIcon(const wxIconBundle& icons, int smX, int smY, int i);
 
 
     // is the window currently iconized?