diff --git a/src/flask/sessions.py b/src/flask/sessions.py
index ee19ad63..d1b82c98 100644
--- a/src/flask/sessions.py
+++ b/src/flask/sessions.py
@@ -368,7 +368,7 @@ class SecureCookieSessionInterface(SessionInterface):
         val = self.get_signing_serializer(app).dumps(dict(session))  # type: ignore
         response.set_cookie(
             name,
-            val,  # type: ignore
+            val,
             expires=expires,
             httponly=httponly,
             domain=domain,