diff --git a/nixos/modules/services/x11/desktop-managers/mate.nix b/nixos/modules/services/x11/desktop-managers/mate.nix
index 4a6f2ca727d9..910a246d776c 100644
--- a/nixos/modules/services/x11/desktop-managers/mate.nix
+++ b/nixos/modules/services/x11/desktop-managers/mate.nix
@@ -86,6 +86,7 @@ in
         pkgs.shared-mime-info
         pkgs.xdg-user-dirs # Update user dirs as described in https://freedesktop.org/wiki/Software/xdg-user-dirs/
         pkgs.mate.mate-settings-daemon
+        pkgs.yelp # for 'Contents' in 'Help' menus
       ];
 
     programs.dconf.enable = true;