diff --git a/app/models.py b/app/models.py
index 686843ce..867686d9 100644
--- a/app/models.py
+++ b/app/models.py
@@ -642,7 +642,7 @@ class User(Base, ModelMixin, UserMixin, PasswordOracle):
         if sub is None:
             return False
 
-        if isinstance(sub, ManualSubscription) and sub.is_giveaway():
+        if isinstance(sub, ManualSubscription) and sub.is_giveaway:
             return False
 
         return True