diff --git a/planetstack/observer/steps/sync_external_routes.py b/planetstack/observer/steps/sync_external_routes.py
index b6e9df3..334d19d 100644
--- a/planetstack/observer/steps/sync_external_routes.py
+++ b/planetstack/observer/steps/sync_external_routes.py
@@ -8,7 +8,7 @@
     provides=[]
     requested_interval = 86400 # This step is slow like a pig. Let's run it infrequently
 
-    def call(self):
+    def call(self, **args):
         routes = self.driver.get_external_routes()
         subnets = self.driver.shell.quantum.list_subnets()['subnets']
         for subnet in subnets: