diff --git a/addons/website/models/ir_http.py b/addons/website/models/ir_http.py
index a4648e7d99d..b5120fcadd3 100644
--- a/addons/website/models/ir_http.py
+++ b/addons/website/models/ir_http.py
@@ -283,7 +283,7 @@ class Http(models.AbstractModel):
 
             values = dict(
                 exception=exception,
-                traceback=traceback.format_exc(exception),
+                traceback=traceback.format_exc(),
             )
 
             if isinstance(exception, werkzeug.exceptions.HTTPException):