diff --git a/main.py b/main.py
index 88e799b..3dbaa81 100755
--- a/main.py
+++ b/main.py
@@ -69,11 +69,11 @@ def main():
     queue = Queue()
 
     lights = []
-    for addr in args.ignition_wal_l710:
+    for addr in args.ignition_wal_l710 or []:
         lights.append(IgnitionWALL710(addr))
-    for addr in args.varytec_wash_zoom_712:
-       lights.append(VarytecHeroWashZoom712(addr))
-    for addr in args.wled:
+    for addr in args.varytec_wash_zoom_712 or []:
+        lights.append(VarytecHeroWashZoom712(addr))
+    for addr in args.wled or []:
         lights.append(WLED(addr))
 
     if not lights: