diff --git a/nixos/modules/installer/cd-dvd/sd-image.nix b/nixos/modules/installer/cd-dvd/sd-image.nix
index 69746a8e979..ce4f53ec2b9 100644
--- a/nixos/modules/installer/cd-dvd/sd-image.nix
+++ b/nixos/modules/installer/cd-dvd/sd-image.nix
@@ -57,7 +57,7 @@ in
       default = null;
       example = "14e19a7b-0ae0-484d-9d54-43bd6fdc20c7";
       description = ''
-        UUID for the main NixOS partition on the SD card.
+        UUID for the filesystem on the main NixOS partition on the SD card.
       '';
     };