diff --git a/lib/authenticator.js b/lib/authenticator.js
index 98e663c7..23be63a0 100644
--- a/lib/authenticator.js
+++ b/lib/authenticator.js
@@ -303,7 +303,7 @@ Authenticator.prototype.serializeUser = function(fn, req, done) {
     
     try {
       var arity = layer.length;
-      if (arity == 3) {
+      if (arity === 3) {
         layer(req, user, serialized);
       } else {
         layer(user, serialized);
@@ -366,7 +366,7 @@ Authenticator.prototype.deserializeUser = function(fn, req, done) {
     
     try {
       var arity = layer.length;
-      if (arity == 3) {
+      if (arity === 3) {
         layer(req, obj, deserialized);
       } else {
         layer(obj, deserialized);
@@ -453,11 +453,11 @@ Authenticator.prototype.transformAuthInfo = function(fn, req, done) {
     
     try {
       var arity = layer.length;
-      if (arity == 1) {
+      if (arity === 1) {
         // sync
         var t = layer(info);
         transformed(null, t);
-      } else if (arity == 3) {
+      } else if (arity === 3) {
         layer(req, info, transformed);
       } else {
         layer(info, transformed);