Index: qgis/src/app/qgswmssourceselect.cpp
===================================================================
--- qgis/src/app/qgswmssourceselect.cpp	(revision 12662)
+++ qgis/src/app/qgswmssourceselect.cpp	(working copy)
@@ -203,11 +203,25 @@
   if ( result == QMessageBox::Ok )
   {
     settings.remove( key );
+    settings.remove( "/Qgis/WMS/" + cmbConnections->currentText() );
     cmbConnections->removeItem( cmbConnections->currentIndex() );  // populateConnectionList();
     setConnectionListPosition();
   }
 }
  QgsNumericSortTreeWidgetItem *QgsWMSSourceSelect::createItem(
   int id, const QStringList &names, QMap<int, QgsNumericSortTreeWidgetItem *> &items, int &layerAndStyleCount,
   const QMap<int, int> &layerParents, const QMap<int, QStringList> &layerParentNames )