diff --git a/pkgs/development/libraries/glibc-2.11/common.nix b/pkgs/development/libraries/glibc-2.11/common.nix
index ed667be10ef..b955bb31a45 100644
--- a/pkgs/development/libraries/glibc-2.11/common.nix
+++ b/pkgs/development/libraries/glibc-2.11/common.nix
@@ -49,6 +49,9 @@ stdenv.mkDerivation ({
 
     /* Make sure `nscd' et al. are linked against `libssp'.  */
     ./stack-protector-link.patch
+
+    /* MOD_NANO definition, for ntp (taken from glibc upstream) */
+    ./mod_nano.patch
   ];
 
   configureFlags = [
diff --git a/pkgs/development/libraries/glibc-2.11/mod_nano.patch b/pkgs/development/libraries/glibc-2.11/mod_nano.patch
new file mode 100644
index 00000000000..2fb35b3df38
--- /dev/null
+++ b/pkgs/development/libraries/glibc-2.11/mod_nano.patch
@@ -0,0 +1,31 @@
+commit 89b432d7a5befb85048c97e881b2106e8df58e43
+Author: Ulrich Drepper <drepper@redhat.com>
+Date:   Sun Nov 22 10:23:12 2009 -0800
+
+    Fix up <sys/timex.h> a bit more for recent API changes.
+
+diff --git a/sysdeps/unix/sysv/linux/sys/timex.h b/sysdeps/unix/sysv/linux/sys/timex.h
+index 5f10c7f..88b87f1 100644
+--- a/sysdeps/unix/sysv/linux/sys/timex.h
++++ b/sysdeps/unix/sysv/linux/sys/timex.h
+@@ -85,6 +85,9 @@ struct timex
+ #define MOD_TIMECONST	ADJ_TIMECONST
+ #define MOD_CLKB	ADJ_TICK
+ #define MOD_CLKA	ADJ_OFFSET_SINGLESHOT /* 0x8000 in original */
++#define MOD_TAI		ADJ_TAI
++#define MOD_MICRO	ADJ_MICRO
++#define MOD_NANO	ADJ_NANO
+ 
+ 
+ /* Status codes (timex.status) */
+@@ -108,8 +111,9 @@ struct timex
+ #define STA_MODE	0x4000	/* mode (0 = PLL, 1 = FLL) (ro) */
+ #define STA_CLK		0x8000	/* clock source (0 = A, 1 = B) (ro) */
+ 
++/* Read-only bits */
+ #define STA_RONLY (STA_PPSSIGNAL | STA_PPSJITTER | STA_PPSWANDER | \
+-    STA_PPSERROR | STA_CLOCKERR) /* read-only bits */
++    STA_PPSERROR | STA_CLOCKERR | STA_NANO | STA_MODE | STA_CLK)
+ 
+ /* Clock states (time_state) */
+ #define TIME_OK		0	/* clock synchronized, no leap second */