diff --git a/subjects/printevenarguments/README.md b/subjects/printevenarguments/README.md
index afac8cc8..a18b602a 100644
--- a/subjects/printevenarguments/README.md
+++ b/subjects/printevenarguments/README.md
@@ -12,6 +12,6 @@ second$
 $ go run . a b c d | cat -e
 b$
 d$
-$ go run . a | cat - e
+$ go run . a | cat -e
 $
 ```