diff --git a/pkgs/development/tools/analysis/valgrind/default.nix b/pkgs/development/tools/analysis/valgrind/default.nix
index fdf2bf1777f2..056b05cd0d62 100644
--- a/pkgs/development/tools/analysis/valgrind/default.nix
+++ b/pkgs/development/tools/analysis/valgrind/default.nix
@@ -8,8 +8,8 @@ stdenv.mkDerivation rec {
     sha256 = "105s4y6h5rsfvml1dfhsjvqgsxvnclbnxbpgk8b4ghpbpcr52fkl";
   };
 
-  # Make Valgrind compile with Glibc 2.11.
-  patches = [ ./glibc-2.11.patch ];
+  # Make Valgrind compile with Glibc 2.12.
+  patches = [ ./glibc-2.12.patch ];
   patchFlags = "-p0";
   preConfigure = "autoreconf";
 
diff --git a/pkgs/development/tools/analysis/valgrind/glibc-2.11.patch b/pkgs/development/tools/analysis/valgrind/glibc-2.12.patch
similarity index 71%
rename from pkgs/development/tools/analysis/valgrind/glibc-2.11.patch
rename to pkgs/development/tools/analysis/valgrind/glibc-2.12.patch
index e2ce53217c9e..bdee0778732d 100644
--- a/pkgs/development/tools/analysis/valgrind/glibc-2.11.patch
+++ b/pkgs/development/tools/analysis/valgrind/glibc-2.12.patch
@@ -1,3 +1,5 @@
+I changed the patch for 2.11 so it allows 2.12 too.
+
 r10941 from svn://svn.valgrind.org/valgrind/trunk
 
 ------------------------------------------------------------------------
@@ -11,7 +13,7 @@ Index: configure.in
 ===================================================================
 --- configure.in	(revision 10940)
 +++ configure.in	(revision 10941)
-@@ -656,6 +656,16 @@
+@@ -656,6 +656,26 @@
  ],
  GLIBC_VERSION="2.10")
  
@@ -24,11 +26,21 @@ Index: configure.in
 +#endif
 +],
 +GLIBC_VERSION="2.11")
++
++AC_EGREP_CPP([GLIBC_212], [
++#include <features.h>
++#ifdef __GNU_LIBRARY__
++ #if (__GLIBC__ == 2 && __GLIBC_MINOR__ == 12)
++  GLIBC_212
++ #endif
++#endif
++],
++GLIBC_VERSION="2.12")
 +
  AC_EGREP_CPP([AIX5_LIBC], [
  #include <standards.h>
  #if defined(_AIXVERSION_510) || defined(_AIXVERSION_520) || defined(_AIXVERSION_530)
-@@ -742,6 +752,13 @@
+@@ -742,6 +752,20 @@
  	DEFAULT_SUPP="glibc-2.34567-NPTL-helgrind.supp ${DEFAULT_SUPP}"
  	DEFAULT_SUPP="glibc-2.X-drd.supp ${DEFAULT_SUPP}"
  	;;
@@ -38,6 +50,13 @@ Index: configure.in
 +	DEFAULT_SUPP="glibc-2.X.supp ${DEFAULT_SUPP}"
 +	DEFAULT_SUPP="glibc-2.34567-NPTL-helgrind.supp ${DEFAULT_SUPP}"
 +	DEFAULT_SUPP="glibc-2.X-drd.supp ${DEFAULT_SUPP}"
++	;;
++     2.12)
++	AC_MSG_RESULT(2.12 family)
++	AC_DEFINE([GLIBC_2_12], 1, [Define to 1 if you're using glibc 2.12.x])
++	DEFAULT_SUPP="glibc-2.X.supp ${DEFAULT_SUPP}"
++	DEFAULT_SUPP="glibc-2.34567-NPTL-helgrind.supp ${DEFAULT_SUPP}"
++	DEFAULT_SUPP="glibc-2.X-drd.supp ${DEFAULT_SUPP}"
 +	;;
       aix5)
  	AC_MSG_RESULT(AIX 5.1 or 5.2 or 5.3)
@@ -47,7 +66,7 @@ Index: configure.in
       *)
  	AC_MSG_RESULT(unsupported version)
 -	AC_MSG_ERROR([Valgrind requires glibc version 2.2 - 2.10])
-+	AC_MSG_ERROR([Valgrind requires glibc version 2.2 - 2.11])
++	AC_MSG_ERROR([Valgrind requires glibc version 2.2 - 2.12])
  	AC_MSG_ERROR([or AIX 5.1 or 5.2 or 5.3 GLIBC_VERSION])
  	AC_MSG_ERROR([or Darwin libc])
  	;;