diff --git a/pkgs/top-level/release.nix b/pkgs/top-level/release.nix
index 06d5faa261c..7381c23de7e 100644
--- a/pkgs/top-level/release.nix
+++ b/pkgs/top-level/release.nix
@@ -435,29 +435,24 @@ with (import ./release-lib.nix);
   */
 
   linuxPackages_2_6_25 = {
-    aufs = linux;
     kernel = linux;
   };
 
   linuxPackages_2_6_27 = {
-    aufs = linux;
     kernel = linux;
     virtualbox = linux;
     virtualboxGuestAdditions = linux;
   };
 
   linuxPackages_2_6_28 = {
-    aufs = linux;
     kernel = linux;
   };
 
   linuxPackages_2_6_29 = {
-    aufs = linux;
     kernel = linux;
   };
 
   linuxPackages_2_6_31 = {
-    aufs = linux;
     kernel = linux;
   };