--- a/Modules/_ctypes/_ctypes.c	2014-12-10 16:59:51.000000000 +0100
+++ b/Modules/_ctypes/_ctypes.c	2015-03-13 03:17:29.360113700 +0100
@@ -642,7 +642,7 @@
 #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());
@@ -3393,7 +3393,7 @@
 #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());