diff --git a/bin/xmet-spc-render b/bin/xmet-spc-render
index 78b98b6..52e3d10 100755
--- a/bin/xmet-spc-render
+++ b/bin/xmet-spc-render
@@ -85,7 +85,7 @@ args = argparser.parse_args()
 config = Config.load()
 db     = Database.from_config(config)
 
-conus  = SPCOutlookMap(args.dark)
+conus  = SPCOutlookMap(dark=args.dark)
 
 if args.file is None:
     if args.valid is None or args.day is None: