diff --git a/lib/utils/binding-parser.html b/lib/utils/binding-parser.html
index fdb17fe98c..11dd49f6d7 100644
--- a/lib/utils/binding-parser.html
+++ b/lib/utils/binding-parser.html
@@ -97,7 +97,7 @@
         const STATE = {
             INITIAL: bindingData => {
                 let escaped = false;
-                return (char, i) => {
+                return char => {
                     if (char === '\\') {
                         escaped = true;
                     } else if ((char === '{' || char === '[') && !escaped) {