diff --git a/js/jquery.cloudinary.js b/js/jquery.cloudinary.js
index 69e1bca4..b626c496 100644
--- a/js/jquery.cloudinary.js
+++ b/js/jquery.cloudinary.js
@@ -1490,12 +1490,16 @@ var slice = [].slice,
       // operators
       operatorsPattern = "((" + operators + ")(?=[ _]))";
       operatorsReplaceRE = new RegExp(operatorsPattern, "g");
-      expression = expression.replace(operatorsReplaceRE, match => Expression.OPERATORS[match]);
+      expression = expression.replace(operatorsReplaceRE, function (match) {
+        return Expression.OPERATORS[match];
+      });
 
       // predefined variables
       predefinedVarsPattern = "(" + Object.keys(Expression.PREDEFINED_VARS).join("|") + ")";
       predefinedVarsReplaceRE = new RegExp(predefinedVarsPattern, "g");
-      expression = expression.replace(predefinedVarsReplaceRE, (match, p1, offset) => (expression[offset - 1] === '$' ? match : Expression.PREDEFINED_VARS[match]));
+      expression = expression.replace(predefinedVarsReplaceRE, function(match, p1, offset){
+        return (expression[offset - 1] === '$' ? match : Expression.PREDEFINED_VARS[match]);
+      });
 
       return expression.replace(/[ _]+/g, '_');
     };
diff --git a/test/spec/env/js-folder-spec.js b/test/spec/env/js-folder-spec.js
index 0a88b71b..895e3ec7 100644
--- a/test/spec/env/js-folder-spec.js
+++ b/test/spec/env/js-folder-spec.js
@@ -16,7 +16,7 @@ jasmine.getEnv().addReporter(new SpecReporter({
 // List of files to test
 const files = [
   {name: 'canvas-to-blob.min.js', checkSum: "33ecbe6885ad339c3a5af0cfa063810d"},
-  {name: 'jquery.cloudinary.js', checkSum: "6510379e5fa1fb3e8b17db441b922b9b"},
+  {name: 'jquery.cloudinary.js', checkSum: "27886431ad43cf97ca3edd2ed3f4e379"},
   {name: 'jquery.fileupload.js', checkSum: "4bfd85460689a29e314ddfad50c184e0"},
   {name: 'jquery.fileupload-image.js', checkSum: "7c40367b00f74b0c7c43bff009dde942"},
   {name: 'jquery.fileupload-process.js', checkSum: "840f65232eaf1619ea0aff1ab4f5e444"},