diff --git a/systems/x86_64-linux/yerukall/default.nix b/systems/x86_64-linux/yerukall/default.nix
index c085244..b051ee7 100644
--- a/systems/x86_64-linux/yerukall/default.nix
+++ b/systems/x86_64-linux/yerukall/default.nix
@@ -344,6 +344,8 @@ in {
   virtualisation.virtualbox.host = {
     enable = true;
     enableKvm = true;
+    enableHardening = false; # Incompatible with KVM
+    addNetworkInterface = false; # Incompatible with KVM
   };
 
   # Open ports in the firewall.