diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 0fbbc9b5633..4d9fbbfbed6 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -20502,8 +20502,6 @@ in
 
     bbswitch = callPackage ../os-specific/linux/bbswitch {};
 
-    ati_drivers_x11 = throw "ati drivers are no longer supported by any kernel >=4.1"; # added 2021-05-18
-
     chipsec = callPackage ../tools/security/chipsec {
       inherit kernel;
       withDriver = true;
@@ -20675,6 +20673,9 @@ in
     zfs = zfsStable;
 
     can-isotp = callPackage ../os-specific/linux/can-isotp { };
+  } // lib.optionalAttrs (config.allowAliases or false) {
+    # aliases or removed packages
+    ati_drivers_x11 = throw "ati drivers are no longer supported by any kernel >=4.1"; # added 2021-05-18
   });
 
   # The current default kernel / kernel modules.