diff --git a/planetstack/observer/steps/garbage_collector.py b/planetstack/observer/steps/garbage_collector.py
index 431623d..4f9d61e 100644
--- a/planetstack/observer/steps/garbage_collector.py
+++ b/planetstack/observer/steps/garbage_collector.py
@@ -8,7 +8,7 @@
     requested_interval = 86400
     provides=[]
 
-    def call(self):
+    def call(self, **args):
         try:
             logger.info('gc start')
             #self.sync_roles()