diff --git a/editor/scripts/MapNormalizer b/editor/scripts/MapNormalizer
index a415e7ff3..845c7123d 100644
--- a/editor/scripts/MapNormalizer
+++ b/editor/scripts/MapNormalizer
@@ -17,7 +17,6 @@ void normalizeMap(File mapFile, String mapPath) {
         return;
     }
 
-    map.setModified();
     map.save();
 }