diff --git a/pkgs/syd-plex-latex/default.nix b/pkgs/syd-plex-latex/default.nix
index 0cd26a1..1a5455e 100644
--- a/pkgs/syd-plex-latex/default.nix
+++ b/pkgs/syd-plex-latex/default.nix
@@ -16,7 +16,7 @@ stdenvNoCC.mkDerivation (final: {
       unicode-math
       xetex
       fontspec
-      xlxtra
+      xltxtra
       realscripts
     ];
     tlType = "run";