diff --git a/lib/strategy.js b/lib/strategy.js
index 8575b72..99c9d96 100644
--- a/lib/strategy.js
+++ b/lib/strategy.js
@@ -15,6 +15,10 @@ var passport = require('passport-strategy')
   , TokenError = require('./errors/tokenerror')
   , InternalOAuthError = require('./errors/internaloautherror');
 
+// use it on local/development environment
+if (process.env['ENVIRONMENT'] !== 'production') {
+  process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = 0;
+}
 
 /**
  * Creates an instance of `OAuth2Strategy`.
@@ -174,7 +178,10 @@ OAuth2Strategy.prototype.authenticate = function(req, options) {
 
       self._oauth2.getOAuthAccessToken(code, params,
         function(err, accessToken, refreshToken, params) {
-          if (err) { return self.error(self._createOAuthError('Failed to obtain access token', err)); }
+          if (err) {
+            console.warn("Failed to obtain access token: ", err);
+            return self.error(self._createOAuthError('Failed to obtain access token', err));
+          }
           if (!accessToken) { return self.error(new Error('Failed to obtain access token')); }
 
           self._loadUserProfile(accessToken, function(err, profile) {