--- a/Python/errors.c	Thu Jul 04 17:44:08 2013 -0400
+++ b/Python/errors.c	Thu Jul 04 17:48:16 2013 -0400
@@ -619,25 +619,12 @@
 #endif /* MS_WINDOWS */
 
 PyObject *
-PyErr_SetImportErrorSubclass(PyObject *exception, PyObject *msg,
-    PyObject *name, PyObject *path)
+PyErr_SetImportError(PyObject *msg, PyObject *name, PyObject *path)
 {
-    int issubclass;
     PyObject *args, *kwargs, *error;
 
-    issubclass = PyObject_IsSubclass(exception, PyExc_ImportError);
-    if (issubclass < 0) {
-        return NULL;
-    }
-    else if (!issubclass) {
-        PyErr_SetString(PyExc_TypeError, "expected a subclass of ImportError");
+    if (msg == NULL)
         return NULL;
-    }
-
-    if (msg == NULL) {
-        PyErr_SetString(PyExc_TypeError, "expected a message argument");
-        return NULL;
-    }
 
     args = PyTuple_New(1);
     if (args == NULL)
@@ -662,7 +649,7 @@
     PyDict_SetItemString(kwargs, "name", name);
     PyDict_SetItemString(kwargs, "path", path);
 
-    error = PyObject_Call(exception, args, kwargs);
+    error = PyObject_Call(PyExc_ImportError, args, kwargs);
     if (error != NULL) {
         PyErr_SetObject((PyObject *)Py_TYPE(error), error);
         Py_DECREF(error);
@@ -674,12 +661,6 @@
     return NULL;
 }
 
-PyObject *
-PyErr_SetImportError(PyObject *msg, PyObject *name, PyObject *path)
-{
-    return PyErr_SetImportErrorSubclass(PyExc_ImportError, msg, name, path);
-}
-
 void
 _PyErr_BadInternalCall(const char *filename, int lineno)
 {