diff --git a/nixos/modules/testing/test-instrumentation.nix b/nixos/modules/testing/test-instrumentation.nix
index 1d6c41406107..9b4136223c0f 100644
--- a/nixos/modules/testing/test-instrumentation.nix
+++ b/nixos/modules/testing/test-instrumentation.nix
@@ -128,7 +128,7 @@ in
     # Make it easy to log in as root when running the test interactively.
     users.extraUsers.root.initialHashedPassword = mkOverride 150 "";
 
-    services.xserver.displayManager.logToJournal = true;
+    services.xserver.displayManager.job.logToJournal = true;
   };
 
 }