diff --git a/pkgs/tools/misc/ttmkfdir/cstring.patch b/pkgs/tools/misc/ttmkfdir/cstring.patch
index 6b65b44e8518..e1da347c64f1 100644
--- a/pkgs/tools/misc/ttmkfdir/cstring.patch
+++ b/pkgs/tools/misc/ttmkfdir/cstring.patch
@@ -1,15 +1,3 @@
-diff --git a/directory.cpp b/directory.cpp
-index 5f0d78a..b94cbe5 100644
---- a/directory.cpp
-+++ b/directory.cpp
-@@ -2,6 +2,7 @@
- #include <dirent.h>
- #include <sys/stat.h>
- #include <unistd.h>
-+#include <cstring>
- 
- #include "directory.h"
-
 diff --git a/Makefile b/Makefile
 index e65b64c..52af5ed 100644
 --- a/Makefile
diff --git a/pkgs/tools/misc/ttmkfdir/default.nix b/pkgs/tools/misc/ttmkfdir/default.nix
index 1d633634e595..e4e8d3c3e9b5 100644
--- a/pkgs/tools/misc/ttmkfdir/default.nix
+++ b/pkgs/tools/misc/ttmkfdir/default.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, freetype, fontconfig, libunwind, libtool, flex, bison }:
 
 stdenv.mkDerivation {
-  name = "ttf-mkfontdir-3.0.9-5.1";
+  name = "ttf-mkfontdir-3.0.9-6";
 
   src = fetchurl {
     url = http://ftp.de.debian.org/debian/pool/main/t/ttmkfdir/ttmkfdir_3.0.9.orig.tar.gz;
@@ -12,8 +12,8 @@ stdenv.mkDerivation {
   # who knows more about C/C++ ..
   patches =
     [ (fetchurl {
-        url = http://ftp.de.debian.org/debian/pool/main/t/ttmkfdir/ttmkfdir_3.0.9-5.1.diff.gz;
-        sha256 = "1500kwvhxfq85zg7nwnn9dlvjxyg2ni7as17gdfm67pl9a45q3w4";
+        url = http://ftp.de.debian.org/debian/pool/main/t/ttmkfdir/ttmkfdir_3.0.9-6.diff.gz;
+        sha256 = "141kxaf2by8nf87hqyszaxi0n7nnmswr1nh2i5r5bsvxxmaj9633";
       })
     
       ./cstring.patch # also fixes some other compilation issues (freetype includes)