diff --git a/python3/016-3.4-ctypes-error-formatting.patch b/python3/016-3.4-ctypes-error-formatting.patch
new file mode 100644
index 00000000..e459d3d9
--- /dev/null
+++ b/python3/016-3.4-ctypes-error-formatting.patch
@@ -0,0 +1,33 @@
+changeset:   95430:36eca0b259e2
+branch:      3.4
+parent:      95427:657ebef5b291
+user:        Serhiy Storchaka <storchaka@gmail.com>
+date:        Sat Apr 04 10:05:48 2015 +0300
+files:       Misc/ACKS Misc/NEWS Modules/_ctypes/_ctypes.c
+description:
+Issue #23338: Fixed formatting ctypes error messages on Cygwin.
+Patch by Makoto Kato.
+
+
+diff -r 657ebef5b291 -r 36eca0b259e2 Modules/_ctypes/_ctypes.c
+--- a/Modules/_ctypes/_ctypes.c	Sat Apr 04 09:47:31 2015 +0300
++++ b/Modules/_ctypes/_ctypes.c	Sat Apr 04 10:05:48 2015 +0300
+@@ -593,7 +593,7 @@
+ #ifdef __CYGWIN__
+ /* dlerror() isn't very helpful on cygwin */
+         PyErr_Format(PyExc_ValueError,
+-                     "symbol '%s' not found (%s) ",
++                     "symbol '%s' not found",
+                      name);
+ #else
+         PyErr_SetString(PyExc_ValueError, ctypes_dlerror());
+@@ -3279,7 +3279,7 @@
+ #ifdef __CYGWIN__
+ /* dlerror() isn't very helpful on cygwin */
+         PyErr_Format(PyExc_AttributeError,
+-                     "function '%s' not found (%s) ",
++                     "function '%s' not found",
+                      name);
+ #else
+         PyErr_SetString(PyExc_AttributeError, ctypes_dlerror());
+
diff --git a/python3/PKGBUILD b/python3/PKGBUILD
index ba4ebe53..6a6ac5e6 100644
--- a/python3/PKGBUILD
+++ b/python3/PKGBUILD
@@ -31,6 +31,7 @@ source=(http://www.python.org/ftp/python/${pkgver%rc*}/Python-${pkgver}.tar.xz
         013-3.4-select-cygwin.patch
         014-3.4-signal-cygwin.patch
         015-3.4-struct-cygwin.patch
+        016-3.4-ctypes-error-formatting.patch
         025-MINGW-compiler-customize-mingw-cygwin-compilers.patch
         900-msysize.patch
         910-libffi-msys2.patch
@@ -51,6 +52,7 @@ sha1sums=('7ca5cd664598bea96eec105aa6453223bb6b4456'
           '346183ac40b42b9baceb27d5f176989fa2ad2b4e'
           '415a2d49249f298f9f399587ae2420f8234bb395'
           '1166da89b56c68829884d65dd0d9a6be9bce40e7'
+          '099cf537471664801849ea5e36f91cbcb2f20e6a'
           'd3e68ba2091f6b61f2440e2ef491373c68bf1d0d'
           '02a0ff9456b62dda9de5b6bd2378367aba17b199'
           '4a20a20b7dec2b9e9e87529d2e0347de9fcd6eb8'
@@ -76,6 +78,7 @@ prepare() {
   patch -p1 -i ${srcdir}/013-3.4-select-cygwin.patch
   patch -p1 -i ${srcdir}/014-3.4-signal-cygwin.patch
   patch -p1 -i ${srcdir}/015-3.4-struct-cygwin.patch
+  patch -p1 -i ${srcdir}/016-3.4-ctypes-error-formatting.patch
   patch -p1 -i ${srcdir}/025-MINGW-compiler-customize-mingw-cygwin-compilers.patch
   patch -p1 -i ${srcdir}/900-msysize.patch
   patch -p1 -i ${srcdir}/910-libffi-msys2.patch