diff --git a/README.rst b/README.rst
index 6a25974de2a4f96030ace4d94c1ee7250cee1328..3b19d62a8816c2dd30a9df77de7a2d6b424eedb7 100644
--- a/README.rst
+++ b/README.rst
@@ -63,3 +63,8 @@ Simply run:
 .. code:: shell
 
     make test
+
+TODO
+----
+
+- Detect when no parameters are passed and output a usage message.