diff --git a/src/common/sizer.cpp b/src/common/sizer.cpp
index 959ba220a8..1291915515 100644
--- a/src/common/sizer.cpp
+++ b/src/common/sizer.cpp
@@ -840,6 +840,10 @@ bool wxSizer::Replace( size_t old, wxSizerItem *newitem )
 
     wxSizerItem *item = node->GetData();
     node->SetData(newitem);
+
+    if (item->IsWindow() && item->GetWindow())
+        item->GetWindow()->SetContainingSizer(NULL);
+
     delete item;
 
     return true;