diff --git a/nixos/modules/services/x11/xautolock.nix b/nixos/modules/services/x11/xautolock.nix
index a614559970e9..cbe000058dc6 100644
--- a/nixos/modules/services/x11/xautolock.nix
+++ b/nixos/modules/services/x11/xautolock.nix
@@ -21,7 +21,7 @@ in
           type = types.int;
 
           description = ''
-            Idle time to wait until xautolock locks the computer.
+            Idle time (in minutes) to wait until xautolock locks the computer.
           '';
         };