diff --git a/mautrix_telegram/user.py b/mautrix_telegram/user.py
index 9c365656..ea7e2032 100644
--- a/mautrix_telegram/user.py
+++ b/mautrix_telegram/user.py
@@ -227,7 +227,9 @@ class User(AbstractUser, BaseUser):
 
         if portal:
             self.register_portal(portal)
+            return False
 
+        # Don't bother handling the update
         return True
 
     # endregion