diff --git a/core/server/services/mega/mega.js b/core/server/services/mega/mega.js
index a27b405d25..399df30328 100644
--- a/core/server/services/mega/mega.js
+++ b/core/server/services/mega/mega.js
@@ -50,7 +50,7 @@ const getEmailData = async (postModel, members = []) => {
         const {groups: {memberProp}} = replacementStr.match(REPLACEMENT_STRING_REGEX);
         if (ALLOWED_REPLACEMENTS.includes(memberProp)) {
             const varName = `replacement_${count}`;
-            count++;
+            count = count + 1;
             return `%recipient.${varName}`;
         }
         return replacementStr;
diff --git a/test/.eslintrc.json b/test/.eslintrc.json
index 77c4da4731..56148d54dc 100644
--- a/test/.eslintrc.json
+++ b/test/.eslintrc.json
@@ -11,9 +11,6 @@
         "eslint:recommended",
         "plugin:ghost/test"
     ],
-    "parserOptions": {
-        "ecmaVersion": 2017
-    },
     "rules": {
         // these rules were were not previously enforced in our custom rules,
         // they're turned off here because they _are_ enforced in our plugin.