diff --git a/cobrawap/__main__.py b/cobrawap/__main__.py
index 71ba72c4..d936a334 100755
--- a/cobrawap/__main__.py
+++ b/cobrawap/__main__.py
@@ -162,6 +162,10 @@ def main():
         log.info("executing Cobrawap block")
         run_block(**vars(args), block_args=unknown)
 
+    elif args.command is None:
+        CLI.print_help(sys.stderr)
+        CLI.parse_args()
+
     else:
         log.info(f"{args.command} not known!")