diff --git a/modules/aliases.nix b/modules/aliases.nix
index b4a9453..8dbd4d8 100644
--- a/modules/aliases.nix
+++ b/modules/aliases.nix
@@ -1,8 +1,8 @@
 {
   home.home.shellAliases = {
     vm = "sudo nixos-rebuild build-vm --flake .#email";
-    build = "sudo nixos-rebuild switch --flake .#default";
-    build-nosub = "sudo nixos-rebuild switch --flake .#default --option substitute false";
+    build = "nice -n 19 sudo nixos-rebuild switch --flake .#default";
+    build-nosub = "nice -n 19 sudo nixos-rebuild switch --flake .#default --option substitute false";
     mnt = "sudo mkdir /mnt -p && sudo mount --target /mnt";
   };
 }