diff --git a/pkgs/development/libraries/ptlib/default.nix b/pkgs/development/libraries/ptlib/default.nix
index c5d3d7411309..f980a14aa41d 100644
--- a/pkgs/development/libraries/ptlib/default.nix
+++ b/pkgs/development/libraries/ptlib/default.nix
@@ -27,6 +27,7 @@ stdenv.mkDerivation rec {
     (fetchpatch { url = http://sources.debian.net/data/main/p/ptlib/2.10.11~dfsg-2.1/debian/patches/gcc-5_support;
       sha256 = "0pf2yj0150r4cnc6nv65mclrm3dillqh1xjk7m6gsjnk9b96i5d4";
     })
+    ./ptlib-2.10.11-glibc-2.26.patch
   ];
 
   meta = with stdenv.lib; {
@@ -41,4 +42,3 @@ stdenv.mkDerivation rec {
     };
   };
 }
-
diff --git a/pkgs/development/libraries/ptlib/ptlib-2.10.11-glibc-2.26.patch b/pkgs/development/libraries/ptlib/ptlib-2.10.11-glibc-2.26.patch
new file mode 100644
index 000000000000..300c3736abf7
--- /dev/null
+++ b/pkgs/development/libraries/ptlib/ptlib-2.10.11-glibc-2.26.patch
@@ -0,0 +1,13 @@
+diff --git a/src/ptlib/unix/channel.cxx b/src/ptlib/unix/channel.cxx
+index 3b17dda..2dcaa18 100644
+--- a/src/ptlib/unix/channel.cxx
++++ b/src/ptlib/unix/channel.cxx
+@@ -36,7 +36,7 @@
+ 
+ #include <ptlib.h>
+ #include <sys/ioctl.h>
+-
++#include <sys/uio.h>
+ 
+ #include "../common/pchannel.cxx"
+