diff --git a/nixos/modules/tasks/encrypted-devices.nix b/nixos/modules/tasks/encrypted-devices.nix
index 0b4c41a0f2a8..da0c9408d891 100644
--- a/nixos/modules/tasks/encrypted-devices.nix
+++ b/nixos/modules/tasks/encrypted-devices.nix
@@ -36,7 +36,7 @@ let
 
       keyFile = mkOption {
         default = null;
-        example = "/root/.swapkey";
+        example = "/mnt-root/root/.swapkey";
         type = types.nullOr types.str;
         description = "File system location of keyfile. This unlocks the drive after the root has been mounted to <literal>/mnt-root</literal>.";
       };