diff --git a/src/common/sizer.cpp b/src/common/sizer.cpp
index e93aee1e64..ce8405973c 100644
--- a/src/common/sizer.cpp
+++ b/src/common/sizer.cpp
@@ -408,7 +408,7 @@ void wxSizer::Fit( wxWindow *window )
     else
         size = GetMinWindowSize( window );
 
-    window->SetSize( size );
+    window->SetClientSize( size );
 }
 
 void wxSizer::Layout()