diff --git a/template/flake.nix b/template/flake.nix
index 5dd3718..e687e48 100644
--- a/template/flake.nix
+++ b/template/flake.nix
@@ -39,7 +39,7 @@
           # Set this as high as possible, but leave some buffer (e.g. 500 MB).
           # As of 2024-02 the possible maximum is 4194304
           # Example: If you have 4 GB memory, set this to 3500000.
-          pbkdf-memory = 4000000;
+          pbkdf-memory = "4000000";
         })
 
         # Change device name match your block device.