diff --git a/doc/tor.md b/doc/tor.md
index 7b4b367ab6..5ca1843c1a 100644
--- a/doc/tor.md
+++ b/doc/tor.md
@@ -120,7 +120,7 @@ You can also check the group of the cookie file. On most Linux systems, the Tor
 auth cookie will usually be `/run/tor/control.authcookie`:
 
 ```
-stat -c '%G' /run/tor/control.authcookie
+TORGROUP=$(stat -c '%G' /run/tor/control.authcookie)
 ```
 
 Once you have determined the `${TORGROUP}` and selected the `${USER}` that will