diff --git a/debugger/util/treeitem.cpp b/debugger/util/treeitem.cpp
--- a/debugger/util/treeitem.cpp
+++ b/debugger/util/treeitem.cpp
@@ -121,10 +121,7 @@
     // Only delete the children after removing them
     // from model.  Otherwise, the model will touch
     // deleted things, with undefined results.
-    for (int i = 0; i < childItems.size(); ++i) {
-        TreeItem* v = child(i);
-        delete v;
-    }
+    qDeleteAll(copy);
 }
 
 void TreeItem::clear()