diff --git a/hosts/busch/default.nix b/hosts/busch/default.nix
index 3c55b48..62a43a9 100644
--- a/hosts/busch/default.nix
+++ b/hosts/busch/default.nix
@@ -87,6 +87,8 @@
     memoryPercent = 50;
   };
 
+  hardware.ksm.enable = true; # Linux kernel Same-Page Merging, useful when having multiple VMs with same OS
+
   networking.useDHCP = false;
 
   systemd.network = {