diff --git a/nixos/roles/xen_guest.nix b/nixos/roles/xen_guest.nix
index 9c9ee32..f7cef3e 100644
--- a/nixos/roles/xen_guest.nix
+++ b/nixos/roles/xen_guest.nix
@@ -10,6 +10,7 @@
       kernelModules = [ ];
     };
     extraModulePackages = [ ];
+    tmp.useTmpfs = true;
   };
 }