diff -r f60e16663f6e Python/ceval.c
--- a/Python/ceval.c	Sat Aug 06 13:48:10 2016 -0700
+++ b/Python/ceval.c	Sun Aug 07 20:49:27 2016 +0800
@@ -4190,8 +4190,8 @@
 
     PyErr_SetObject(type, value);
     /* PyErr_SetObject incref's its arguments */
-    Py_XDECREF(value);
-    Py_XDECREF(type);
+    Py_DECREF(value);
+    Py_DECREF(type);
     return 0;
 
 raise_error: