diff --git a/lib/6to5/file.js b/lib/6to5/file.js
index 66c86d7fce..fa2967e3d2 100644
--- a/lib/6to5/file.js
+++ b/lib/6to5/file.js
@@ -42,7 +42,8 @@ File.helpers = [
 
 File.excludeHelpersFromRuntime = [
   "async-to-generator",
-  "typeof"
+  "typeof",
+  "tagged-template-literal-loose"
 ];
 
 File.normaliseOptions = function (opts) {
diff --git a/lib/6to5/transformation/transformers/es6-template-literals.js b/lib/6to5/transformation/transformers/es6-template-literals.js
index 81872a7766..5e4f824cf3 100644
--- a/lib/6to5/transformation/transformers/es6-template-literals.js
+++ b/lib/6to5/transformation/transformers/es6-template-literals.js
@@ -20,11 +20,10 @@ exports.TaggedTemplateExpression = function (node, parent, file) {
   strings = t.arrayExpression(strings);
   raw = t.arrayExpression(raw);
 
-  var template = file.isLoose("templateLiterals") ?
-      "tagged-template-literal-loose" :
-      "tagged-template-literal";
+  var templateName = "tagged-template-literal";
+  if (file.isLoose("templateLiterals")) templateName += "-loose";
+  args.push(t.callExpression(file.addHelper(templateName), [strings, raw]));
 
-  args.push(t.callExpression(file.addHelper(template), [strings, raw]));
   args = args.concat(quasi.expressions);
 
   return t.callExpression(node.tag, args);