diff --git a/lib/passport-oauth2.d.ts b/lib/passport-oauth2.d.ts
new file mode 100644
index 0000000..da30853
--- /dev/null
+++ b/lib/passport-oauth2.d.ts
@@ -0,0 +1,72 @@
+// Type definitions for passport-oauth2 1.4
+// Project: https://github.com/jaredhanson/passport-oauth2#readme
+// Definitions by: Pasi Eronen <https://github.com/pasieronen>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.3
+
+import { Request } from 'express';
+import { Strategy } from 'passport';
+
+declare class OAuth2Strategy implements Strategy {
+    name: string;
+
+    constructor(options: OAuth2Strategy.StrategyOptions, verify: OAuth2Strategy.VerifyFunction);
+    constructor(options: OAuth2Strategy.StrategyOptionsWithRequest, verify: OAuth2Strategy.VerifyFunctionWithRequest);
+
+    authenticate(req: Request, options?: any): void;
+
+    userProfile(accessToken: string, done: (err?: Error | null, profile?: any) => void): void;
+    authorizationParams(options: any): object;
+    tokenParams(options: any): object;
+    parseErrorResponse(body: any, status: number): Error | null;
+}
+
+declare namespace OAuth2Strategy {
+    type VerifyCallback = (err?: Error | null, user?: object, info?: object) => void;
+
+    type VerifyFunction =
+        ((accessToken: string, refreshToken: string, profile: any, verified: VerifyCallback) => void) |
+        ((accessToken: string, refreshToken: string, results: any, profile: any, verified: VerifyCallback) => void);
+    type VerifyFunctionWithRequest =
+        ((req: Request, accessToken: string, refreshToken: string, profile: any, verified: VerifyCallback) => void) |
+        ((req: Request, accessToken: string, refreshToken: string, results: any, profile: any, verified: VerifyCallback) => void);
+
+    interface _StrategyOptionsBase {
+        authorizationURL: string;
+        tokenURL: string;
+        clientID: string;
+        clientSecret: string;
+        callbackURL: string;
+        useExactURLs?: boolean;
+    }
+    interface StrategyOptions extends _StrategyOptionsBase {
+        passReqToCallback?: false;
+    }
+    interface StrategyOptionsWithRequest extends _StrategyOptionsBase {
+        passReqToCallback: true;
+    }
+
+    type Strategy = OAuth2Strategy;
+    const Strategy: typeof OAuth2Strategy;
+
+    class TokenError extends Error {
+        constructor(message: string | undefined, code: string, uri?: string, status?: number);
+        code: string;
+        uri?: string;
+        status: number;
+    }
+
+    class AuthorizationError extends Error {
+        constructor(message: string | undefined, code: string, uri?: string, status?: number);
+        code: string;
+        uri?: string;
+        status: number;
+    }
+
+    class InternalOAuthError extends Error {
+        constructor(message: string, err: any);
+        oauthError: any;
+    }
+}
+
+export = OAuth2Strategy;
diff --git a/lib/strategy.js b/lib/strategy.js
index a0d50bd..c8a5fae 100644
--- a/lib/strategy.js
+++ b/lib/strategy.js
@@ -47,6 +47,9 @@ var passport = require('passport-strategy')
  *   - `clientSecret`      secret used to establish ownership of the client identifer
  *   - `callbackURL`       URL to which the service provider will redirect the user after obtaining authorization
  *   - `passReqToCallback` when `true`, `req` is the first argument to the verify callback (default: `false`)
+ *   - `useExactURLs`      when `true`, `authorizationURL`, `tokenURL`, and `callbackURL` are passed exactly as they are typed. If `false`,
+ *                         HTTP protocol and hostname are automatically determined and appended. This can be used to get around strict
+ *                         callbackURL matching on the OAuth provider
  *
  * Examples:
  *
@@ -92,6 +95,7 @@ function OAuth2Strategy(options, verify) {
       '', options.authorizationURL, options.tokenURL, options.customHeaders);
 
   this._callbackURL = options.callbackURL;
+  this._useExactURLs = options.useExactURLs || false; //Default to false for undefined
   this._scope = options.scope;
   this._scopeSeparator = options.scopeSeparator || ' ';
   this._key = options.sessionKey || ('oauth2:' + url.parse(options.authorizationURL).hostname);
@@ -133,7 +137,7 @@ OAuth2Strategy.prototype.authenticate = function(req, options) {
   }
 
   var callbackURL = options.callbackURL || this._callbackURL;
-  if (callbackURL) {
+  if (callbackURL && !this._useExactURLs) {
     var parsed = url.parse(callbackURL);
     if (!parsed.protocol) {
       // The callback URL is relative, resolve a fully qualified URL from the
diff --git a/package.json b/package.json
index 560a959..b6320cd 100644
--- a/package.json
+++ b/package.json
@@ -17,12 +17,18 @@
     "email": "jaredhanson@gmail.com",
     "url": "http://www.jaredhanson.net/"
   },
+  "contributors": [
+     {
+        "name": "Michael Demoret",
+        "email": "mdemoret@gmail.com"
+     }
+  ],
   "repository": {
     "type": "git",
-    "url": "git://github.com/jaredhanson/passport-oauth2.git"
+    "url": "git://github.com/mdemoret/passport-oauth2.git"
   },
   "bugs": {
-    "url": "http://github.com/jaredhanson/passport-oauth2/issues"
+    "url": "http://github.com/mdemoret/passport-oauth2/issues"
   },
   "license": "MIT",
   "licenses": [
@@ -49,5 +55,6 @@
   },
   "scripts": {
     "test": "node_modules/.bin/mocha --reporter spec --require test/bootstrap/node test/*.test.js test/**/*.test.js"
-  }
+  },
+  "typings": "lib/passport-oauth2.d.ts"
 }
diff --git a/test/oauth2.test.js b/test/oauth2.test.js
index e829751..a378f30 100644
--- a/test/oauth2.test.js
+++ b/test/oauth2.test.js
@@ -360,6 +360,39 @@ describe('OAuth2Strategy', function() {
         expect(url).to.equal('https://www.example.com/oauth2/authorize?response_type=code&redirect_uri=https%3A%2F%2Fwww.example.net%2Fauth%2Fexample%2Fcallback%2Falt2&client_id=ABC123');
       });
     }); // that redirects to service provider with relative redirect URI option
+
+    describe('that redirects to service provider with relative redirect URI option and useExactURLs on', function() {
+      var strategy = new OAuth2Strategy({
+        authorizationURL: 'https://www.example.com/oauth2/authorize',
+        tokenURL: 'https://www.example.com/oauth2/token',
+        clientID: 'ABC123',
+        clientSecret: 'secret',
+        callbackURL: 'https://www.example.net/auth/example/callback',
+        useExactURLs: true,
+      },
+      function(accessToken, refreshToken, profile, done) {});
+      
+      
+      var url;
+  
+      before(function(done) {
+        chai.passport.use(strategy)
+          .redirect(function(u) {
+            url = u;
+            done();
+          })
+          .req(function(req) {
+            req.url = '/auth/example/callback/alt2';
+            req.headers.host = 'www.example.net';
+            req.connection = { encrypted: true };
+          })
+          .authenticate({ callbackURL: '/auth/example/callback/alt2' });
+      });
+  
+      it('should be redirected', function() {
+        expect(url).to.equal('https://www.example.com/oauth2/authorize?response_type=code&redirect_uri=%2Fauth%2Fexample%2Fcallback%2Falt2&client_id=ABC123');
+      });
+    }); // that redirects to service provider with relative redirect URI option and useExactURLs on
     
     describe('that redirects to authorization server using authorization endpoint that has query parameters with scope option', function() {
       var strategy = new OAuth2Strategy({