diff --git a/addons/google_gmail/controllers/main.py b/addons/google_gmail/controllers/main.py
index 224470e2662100506d554afa8f9b40bfffaf072d..f9bf00d9008b13c8a358b3b7d8304761bcb9e8f2 100644
--- a/addons/google_gmail/controllers/main.py
+++ b/addons/google_gmail/controllers/main.py
@@ -29,7 +29,7 @@ class GoogleGmailController(http.Controller):
             raise Forbidden()
 
         if error:
-            return _('An error occur during the authentication process: %s.') % error
+            return _('An error occur during the authentication process.')
 
         try:
             state = json.loads(state)
@@ -56,8 +56,8 @@ class GoogleGmailController(http.Controller):
 
         try:
             refresh_token, access_token, expiration = record._fetch_gmail_refresh_token(code)
-        except UserError as e:
-            return _('An error occur during the authentication process: %s.') % str(e.name)
+        except UserError:
+            return _('An error occur during the authentication process.')
 
         record.write({
             'google_gmail_access_token': access_token,
diff --git a/addons/google_gmail/i18n/google_gmail.pot b/addons/google_gmail/i18n/google_gmail.pot
index 9a4f8508d29dc0db1d8dd6a121bb916a1d39acbc..91eed151227c33bfea2b3a74d34534cab741c634 100644
--- a/addons/google_gmail/i18n/google_gmail.pot
+++ b/addons/google_gmail/i18n/google_gmail.pot
@@ -58,7 +58,7 @@ msgstr ""
 #: code:addons/google_gmail/controllers/main.py:0
 #: code:addons/google_gmail/controllers/main.py:0
 #, python-format
-msgid "An error occur during the authentication process: %s."
+msgid "An error occur during the authentication process."
 msgstr ""
 
 #. module: google_gmail