disallow variable shadowing

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/groupByLimit.js b/lib/groupByLimit.js
index fe484ec..aebe088 100644
--- a/lib/groupByLimit.js
+++ b/lib/groupByLimit.js
@@ -23,10 +23,10 @@ import wrapAsync from './internal/wrapAsync';
 export default function(coll, limit, iteratee, callback) {
     callback = callback || noop;
     var _iteratee = wrapAsync(iteratee);
-    mapLimit(coll, limit, (val, callback) => {
+    mapLimit(coll, limit, (val, iterCb) => {
         _iteratee(val, (err, key) => {
-            if (err) return callback(err);
-            return callback(null, {key, val});
+            if (err) return iterCb(err);
+            return iterCb(null, {key, val});
         });
     }, (err, mapResults) => {
         var result = {};