diff --git a/hosts/semita/default.nix b/hosts/semita/default.nix
index bd8d7e5..04734d1 100644
--- a/hosts/semita/default.nix
+++ b/hosts/semita/default.nix
@@ -86,6 +86,11 @@ in {
       dpi = 144;
       upscaleDefaultCursor = true;
     };
+  # enable oom killer when system ram drops below 5% free
+    earlyoom = {
+      enable = true;
+      freeMemThreshold = 5; # <%5 free
+    };
   };
 
   environment.variables = {