diff --git a/pillar/web/system_util.py b/pillar/web/system_util.py
index f0e0747b..990640a4 100644
--- a/pillar/web/system_util.py
+++ b/pillar/web/system_util.py
@@ -37,7 +37,7 @@ def pillar_server_endpoint_static():
 def pillar_api(token=None):
     # Check if current_user is initialized (in order to support manage.py
     # scripts and non authenticated server requests).
-    if token is None and current_user and current_user.is_authenticated:
+    if token is None and current_user and current_user.is_authenticated():
         token = current_user.id
 
     api = FlaskInternalApi(