diff --git a/lib/connect-redis.js b/lib/connect-redis.js
index 7f8c8456..854dbb52 100644
--- a/lib/connect-redis.js
+++ b/lib/connect-redis.js
@@ -29,15 +29,15 @@ module.exports = function(session) {
     get(sid, cb = noop) {
       let key = this.prefix + sid
 
-      this.client.get(key, (er, data) => {
-        if (er) return cb(er)
+      this.client.get(key, (err, data) => {
+        if (err) return cb(err)
         if (!data) return cb()
 
         let result
         try {
           result = this.serializer.parse(data)
-        } catch (er) {
-          return cb(er)
+        } catch (err) {
+          return cb(err)
         }
         return cb(null, result)
       })