diff --git a/nixos/tests/xfce4-14.nix b/nixos/tests/xfce4-14.nix
index 9dfedc6fbb9..94378f0c8d3 100644
--- a/nixos/tests/xfce4-14.nix
+++ b/nixos/tests/xfce4-14.nix
@@ -14,6 +14,8 @@ import ./make-test.nix ({ pkgs, ...} : {
       services.xserver.desktopManager.xfce4-14.enable = true;
 
       hardware.pulseaudio.enable = true; # needed for the factl test, /dev/snd/* exists without them but udev doesn't care then
+  
+      virtualisation.memorySize = 1024;
     };
 
   testScript =