--- a/Modules/_ctypes/_ctypes.c	2013-11-17 08:22:55.000000000 +0100
+++ b/Modules/_ctypes/_ctypes.c	2015-03-13 03:09:39.333858300 +0100
@@ -567,7 +567,7 @@
 #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());
@@ -3251,7 +3251,7 @@
 #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());