diff --git a/tools/replacer.js b/tools/replacer.js
index d1261cc..81773b4 100644
--- a/tools/replacer.js
+++ b/tools/replacer.js
@@ -13,8 +13,8 @@ function html_script_replacer(body, replacer, url){
       continue
     }
     var jscode = ''
-    for (var i = 0; i < script.children.length; i++) {
-      jscode += script.children[i].data
+    for (var j = 0; j < script.children.length; j++) {
+      jscode += script.children[j].data
     }
     if (!jscode){
       return