diff --git a/nixos/modules/system/boot/tmp.nix b/nixos/modules/system/boot/tmp.nix
index f927ba1c9c90..c8286979ff41 100644
--- a/nixos/modules/system/boot/tmp.nix
+++ b/nixos/modules/system/boot/tmp.nix
@@ -41,10 +41,10 @@ in
         default = "never";
         example = "within_size";
         description = ''
-          never        - Do not allocate huge memory pages. This is the default.
-          always       - Attempt to allocate huge memory page every time a new page is needed.
-          within_size  - Only allocate huge memory pages if it will be fully within i_size. Also respect madvise(2) hints. Recommended.
-          advise       - Only allocate huge memory pages if requested with madvise(2).
+          - `never`        - Do not allocate huge memory pages. This is the default.
+          - `always`       - Attempt to allocate huge memory page every time a new page is needed.
+          - `within_size`  - Only allocate huge memory pages if it will be fully within i_size. Also respect madvise(2) hints. Recommended.
+          - `advise`       - Only allocate huge memory pages if requested with madvise(2).
         '';
       };