diff --git a/packages/string-templates/src/helpers/list.js b/packages/string-templates/src/helpers/list.js
index b59efb1ef3..6d5241cdd8 100644
--- a/packages/string-templates/src/helpers/list.js
+++ b/packages/string-templates/src/helpers/list.js
@@ -21,6 +21,17 @@ module.exports.getHelperList = () => {
   for (let key of Object.keys(externalHandlebars.addedHelpers)) {
     helpers[key] = externalHandlebars.addedHelpers[key]
   }
+
+  helpers = adjustJsHelpers(helpers)
   Object.freeze(helpers)
   return helpers
 }
+
+function adjustJsHelpers(helpers) {
+  const result = { ...helpers }
+
+  result.avg = function (...params) {
+    return helpers.avg(...params, {})
+  }
+  return result
+}
diff --git a/packages/string-templates/test/manifest.spec.js b/packages/string-templates/test/manifest.spec.js
index c48bc9c9fc..af0b6630a4 100644
--- a/packages/string-templates/test/manifest.spec.js
+++ b/packages/string-templates/test/manifest.spec.js
@@ -121,7 +121,6 @@ describe("manifest", () => {
         })
 
         let convertedJs = convertToJS(hbs)
-        convertedJs = convertedJs.replace(/\n/g, "\n")
 
         let result = processJS(convertedJs, context)
         result = result.replace(/ /g, " ")