diff --git a/templates/nix-config/configuration.nix b/templates/nix-config/configuration.nix
index 9c90dc0..f291868 100644
--- a/templates/nix-config/configuration.nix
+++ b/templates/nix-config/configuration.nix
@@ -48,7 +48,7 @@
 #  boot.initrd.systemd.tpm2.enable = true;
 
   boot.kernel.sysctl = {
-    vm.overcommit_memory=1;
+    "vm.overcommit_memory" = 1;
   };
 
 #  # TPM2 PCR check