diff --git a/pkgs/data/fonts/joypixels/default.nix b/pkgs/data/fonts/joypixels/default.nix
index ab05cee885d..64d5973710a 100644
--- a/pkgs/data/fonts/joypixels/default.nix
+++ b/pkgs/data/fonts/joypixels/default.nix
@@ -13,7 +13,7 @@ let inherit (stdenv.hostPlatform.parsed) kernel;
         name = "joypixels-apple-color-emoji.ttc";
       };
     }.${kernel.name} or rec {
-        systemTag = "nix-os";
+        systemTag = "nixos";
         capitalized = "NixOS";
         ext = "ttf";
         fontFile = "joypixels-android.ttf";