diff --git a/pkgs/applications/misc/cdrtools/default.nix b/pkgs/applications/misc/cdrtools/default.nix
index b83857b6045..2168a21f7da 100644
--- a/pkgs/applications/misc/cdrtools/default.nix
+++ b/pkgs/applications/misc/cdrtools/default.nix
@@ -12,6 +12,11 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ acl libcap ];
 
+  postPatch = ''
+    sed "/\.mk3/d" -i libschily/Targets.man
+    substituteInPlace man/Makefile --replace "man4" ""
+  '';
+
   configurePhase = "true";
 
   GMAKE_NOWARN = true;