diff --git a/client/components/Reader/share/bookManager.js b/client/components/Reader/share/bookManager.js
index 8f16c87d..77a8d041 100644
--- a/client/components/Reader/share/bookManager.js
+++ b/client/components/Reader/share/bookManager.js
@@ -238,7 +238,7 @@ class BookManager {
             await this.init();
         const result = this.metaOnly(value);
         if (!noTouch)
-            Object.assign(result, {touchTime: Date.now()});
+            result.touchTime = Date.now();
 
         if (result.textLength && !result.bookPos && result.bookPosPercent)
             result.bookPos = Math.round(result.bookPosPercent*result.textLength);
@@ -332,7 +332,6 @@ class BookManager {
         return result;
     }
 
-
 }
 
 export default new BookManager();
\ No newline at end of file