diff --git a/src/GUI/new_gui.cxx b/src/GUI/new_gui.cxx
index 034484e27..51bc82fc9 100644
--- a/src/GUI/new_gui.cxx
+++ b/src/GUI/new_gui.cxx
@@ -296,9 +296,6 @@ NewGUI::readDir (const char * path)
                 continue;
             }
             string name = nameprop->getStringValue();
-            if (_dialog_props[name])
-                delete (SGPropertyNode *)_dialog_props[name];
-
             _dialog_props[name] = props;
         }
     }