diff --git a/src/httpaste/__main__.py b/src/httpaste/__main__.py
index f019a95..436a46c 100644
--- a/src/httpaste/__main__.py
+++ b/src/httpaste/__main__.py
@@ -117,7 +117,7 @@ def parser():
 
     p = argparse.ArgumentParser(description='Process some integers.')
 
-    sp = p.add_subparsers(dest='command')
+    sp = p.add_subparsers(dest='command', required=True)
 
     p_standalone = sp.add_parser('standalone', help=command_standalone.__doc__)
     p_standalone.add_argument('--config-path', '-c', required=True)