diff --git a/nixos/modules/services/x11/display-managers/gdm.nix b/nixos/modules/services/x11/display-managers/gdm.nix
index b9808f1ffa69..b51c3dd28bf2 100644
--- a/nixos/modules/services/x11/display-managers/gdm.nix
+++ b/nixos/modules/services/x11/display-managers/gdm.nix
@@ -35,7 +35,7 @@ in
               type = types.bool;
               default = false;
               description = ''
-                Automatically log in as the sepecified <option>auto.user</option>.
+                Automatically log in as the sepecified <option>autoLogin.user</option>.
               '';
             };