diff --git a/nixosConfigurations/muede-lpt2/default.nix b/nixosConfigurations/muede-lpt2/default.nix
index 59a3eef..492afcd 100644
--- a/nixosConfigurations/muede-lpt2/default.nix
+++ b/nixosConfigurations/muede-lpt2/default.nix
@@ -29,6 +29,13 @@
         "i686-linux"
       ];
 
+      # Global default (nixosModules/distributed-builds.nix) is MemoryMax=90%,
+      # which isn't tight enough on this machine's 31GiB to avoid OOM.
+      systemd.services.nix-daemon.serviceConfig = {
+        MemoryHigh = "60%";
+        MemoryMax = lib.mkForce "80%";
+      };
+
       services.xserver.xkb = {
         # Configure keymap in X11
         layout = "de";