diff --git a/requestuser/requestuser.py b/requestuser/requestuser.py
index 3022979..69f9629 100644
--- a/requestuser/requestuser.py
+++ b/requestuser/requestuser.py
@@ -6,7 +6,7 @@ _active = threading.local()
 
 
 def activate(user):
-    if user.is_anonymous():
+    if user.is_anonymous:
         _active.user = None
     else:
         _active.user = user.pk