diff --git a/src/pogo_scaled_estimators/cli.py b/src/pogo_scaled_estimators/cli.py
index fe8bf45..025acbe 100644
--- a/src/pogo_scaled_estimators/cli.py
+++ b/src/pogo_scaled_estimators/cli.py
@@ -25,7 +25,7 @@ def main_cli():
     )
 
     args = parser.parse_args()
-    filters = reduce(operator.or_, args.filters, Filter.NO_FILTER)
+    filters = reduce(operator.or_, args.filters or [], Filter.NO_FILTER)
     calculator = Calculator(args.type, filters)
     calculator.calculate(level=args.level, party=args.party)