diff --git a/pkgs/os-specific/linux/kernel-headers/2.6.28.nix b/pkgs/os-specific/linux/kernel-headers/2.6.28.nix
index a85e6f79bf1..98a06556a19 100644
--- a/pkgs/os-specific/linux/kernel-headers/2.6.28.nix
+++ b/pkgs/os-specific/linux/kernel-headers/2.6.28.nix
@@ -33,6 +33,7 @@ stdenv.mkDerivation {
   patchPhase = ''
     patch --verbose -p1 < "${./unifdef-getline.patch}"
     sed -i '/scsi/d' include/Kbuild
+    sed -i 's|/ %/: prepare scripts FORCE|%/: prepare scripts FORCE|' Makefile
   '';
 
   buildPhase = ''