diff --git a/runtime/main/extend/systemplugin/napi/filemanager.js b/runtime/main/extend/systemplugin/napi/filemanager.js
index 9f5c27c8..27b6174f 100644
--- a/runtime/main/extend/systemplugin/napi/filemanager.js
+++ b/runtime/main/extend/systemplugin/napi/filemanager.js
@@ -26,7 +26,7 @@ export function mockFileManager() {
         })
       }
     },
-	createFile: function (...args) {
+    createFile: function (...args) {
       console.warn("filemanager.createFile interface mocked in the Previewer. How this interface works on the" +
         " Previewer may be different from that on a real device.")
       const len = args.length