diff --git a/site/docs/install.md b/site/docs/install.md
index b4f0f9694..4a3a183e5 100644
--- a/site/docs/install.md
+++ b/site/docs/install.md
@@ -40,7 +40,7 @@ opam switch create 4.06.1
 eval `opam env`
 # check you got what you want
 which ocaml
-ocaml --version
+ocaml -version
 ```
 
 ## Linux