diff --git a/1998/dloweneil/README.md b/1998/dloweneil/README.md
index 78c4d20d3..107015f89 100644
--- a/1998/dloweneil/README.md
+++ b/1998/dloweneil/README.md
@@ -53,7 +53,7 @@ make alt
 ### Alternate use:
 
 ```sh
-./pootris.alt
+./pootris.alt [X size of board] [Y size of board]
 ```