diff --git a/pages/contact/arcanist.txt b/pages/contact/arcanist.txt
index b57e22ce5..54608a406 100644
--- a/pages/contact/arcanist.txt
+++ b/pages/contact/arcanist.txt
@@ -158,8 +158,8 @@ See instructions in "libphutil/resources/ssl/README".
 To resolve this, you can do the following.
 
 <code bash>
-  sudo co MYCERT.crt /usr/share/local/ca-certificates/<yourkey>.crt #(Make sure extension is crt)
-  sudo update-ca-certificates.
+  sudo cp MYCERT.crt /usr/share/local/ca-certificates/<yourkey>.crt #(Make sure extension is crt)
+  sudo update-ca-certificates
 </code>
 
 or