diff --git a/lib/strategy.js b/lib/strategy.js
index 0dec8d7..fc50aaf 100644
--- a/lib/strategy.js
+++ b/lib/strategy.js
@@ -65,7 +65,7 @@ util.inherits(Strategy, OAuth2Strategy);
  */
 Strategy.prototype.authenticate = function(req, options) {
   if (req.query && req.query.error_code) {
-    return this.fail({code: req.query.error_code, 
+    return this.fail({code: parseInt(req.query.error_code, 10), 
                       message: req.query.error_message});
   }
 
diff --git a/package.json b/package.json
index 83ba23b..4ab9f5c 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,8 @@
   "devDependencies": {
     "vows": "0.6.x",
     "mocha": "1.x.x",
-    "chai": "1.x.x"
+    "chai": "1.x.x",
+    "chai-passport-strategy": "0.1.x"
   },
   "engines": { "node": ">= 0.4.0" },
   "scripts": {
diff --git a/test/bootstrap/node.js b/test/bootstrap/node.js
index c99b18e..4f09d45 100644
--- a/test/bootstrap/node.js
+++ b/test/bootstrap/node.js
@@ -1,3 +1,7 @@
-var chai = require('chai');
+var chai = require('chai')
+  , passport = require('chai-passport-strategy');
+
+chai.use(passport);
+
 
 global.expect = chai.expect;
diff --git a/test/strategy-test.js b/test/strategy-test.js
index e205927..cb0df53 100644
--- a/test/strategy-test.js
+++ b/test/strategy-test.js
@@ -377,6 +377,7 @@ vows.describe('FacebookStrategy').addBatch({
     },
   },
 
+  // OK
   'strategy when sending back an error_code': {
     topic: function() {
       var strategy = new FacebookStrategy({
diff --git a/test/strategy.test.js b/test/strategy.test.js
index 2e7251f..cfe0d65 100644
--- a/test/strategy.test.js
+++ b/test/strategy.test.js
@@ -1,4 +1,5 @@
-var FacebookStrategy = require('../lib/strategy');
+var chai = require('chai')
+  , FacebookStrategy = require('../lib/strategy');
 
 
 describe('Strategy', function() {
@@ -13,4 +14,28 @@ describe('Strategy', function() {
     expect(strategy.name).to.equal('facebook');
   });
   
+  describe('handling a return request in which authorization has failed with an error', function() {
+    var info;
+  
+    before(function(done) {
+      chai.passport(strategy)
+        .fail(function(i) {
+          info = i;
+          done();
+        })
+        .req(function(req) {
+          req.query = {};
+          req.query.error_code = '901';
+          req.query.error_message = 'This app is in sandbox mode.  Edit the app configuration at http://developers.facebook.com/apps to make the app publicly visible.';
+        })
+        .authenticate();
+    });
+  
+    it('should fail with info', function() {
+      expect(info).to.not.be.undefined;
+      expect(info.code).to.equal(901);
+      expect(info.message).to.equal('This app is in sandbox mode.  Edit the app configuration at http://developers.facebook.com/apps to make the app publicly visible.');
+    });
+  });
+  
 });