diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e09e89b0b90e..2452b73f9610 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -21305,9 +21305,6 @@ with pkgs;
 
     # For enableQT.
     qt = null; # qt4SDK or qt5SDK
-
-    # For enableXM.
-    motif = null; # motif or lesstif
   };
 
   cernlib = callPackage ../development/libraries/physics/cernlib { };