diff --git a/src/GUI/new_gui.cxx b/src/GUI/new_gui.cxx
index 0e6346f0c..5d52b1c1d 100644
--- a/src/GUI/new_gui.cxx
+++ b/src/GUI/new_gui.cxx
@@ -266,9 +266,6 @@ NewGUI::readDir (const SGPath& path)
           continue;
       }
       string name = nameprop->getStringValue();
-      if (_dialog_props[name])
-          delete (SGPropertyNode *)_dialog_props[name];
-
       _dialog_props[name] = props;
     }
 }