diff --git a/desktops/gnome-unstable.nix b/desktops/gnome-unstable.nix
index 4d0dbf6a..02643e80 100644
--- a/desktops/gnome-unstable.nix
+++ b/desktops/gnome-unstable.nix
@@ -7,7 +7,7 @@
     displayManager.gdm = {
       enable = true;
       settings = {
-        "/apps/gdm/simple-greeter/banner_message_enable" = true;
+        "/apps/gdm/simple-greeter/banner_message_enable" = "true";
         "/apps/gdm/simple-greeter/banner_message_text" = ''
           --
           Welcome to ${hostname}