diff --git a/addons/auth_oauth/controllers/main.py b/addons/auth_oauth/controllers/main.py
index ae01df5f6f7..7baac5d67c4 100644
--- a/addons/auth_oauth/controllers/main.py
+++ b/addons/auth_oauth/controllers/main.py
@@ -43,7 +43,7 @@ class OAuthController(openerpweb.Controller):
                 url = "/#action=login&oauth_error=1"
             except Exception,e:
                 # signup error
-                _logger.exception('oops')
+                _logger.exception("OAuth2: %s" % str(e))
                 url = "/#action=login&oauth_error=2"
         return openerp.addons.web.controllers.main.set_cookie_and_redirect(req, url)
 
diff --git a/addons/auth_oauth/res_users.py b/addons/auth_oauth/res_users.py
index fd26e89c2e3..124c46d687c 100644
--- a/addons/auth_oauth/res_users.py
+++ b/addons/auth_oauth/res_users.py
@@ -41,7 +41,7 @@ class res_users(osv.Model):
 
         validation = self.auth_oauth_rpc(cr, uid, p.validation_endpoint, access_token)
         if validation.get("error"):
-            raise openerp.exceptions.AccessDenied
+            raise Exception(validation['error'])
         if p.data_endpoint:
             data = self.auth_oauth_rpc(cr, uid, p.data_endpoint, access_token)
             validation.update(data)