diff --git a/pdf/src/document.js b/pdf/src/document.js
index 688db2684e..88dd6891e6 100644
--- a/pdf/src/document.js
+++ b/pdf/src/document.js
@@ -1168,6 +1168,11 @@ var CPresentation = CPresentation || function(){};
     };
     CPDFDoc.prototype.SetNeedUpdateSearch = function(bUpdate) {
         this.needUpdateSearch = bUpdate;
+
+        if (bUpdate && this.SearchEngine.TextAroundTimer != null) {
+            clearTimeout(this.SearchEngine.TextAroundTimer);
+            this.SearchEngine.TextAroundTimer = null;
+        }
     };
     CPDFDoc.prototype.IsNeedUpdateSearch = function() {
         return this.needUpdateSearch;