DECREF --> XDECREF
diff --git a/Objects/setobject.c b/Objects/setobject.c
index 978d613..879b4e1 100644
--- a/Objects/setobject.c
+++ b/Objects/setobject.c
@@ -1939,7 +1939,7 @@
 			return NULL;
 	}
 	result = frozenset_new(&PyFrozenSet_Type, args, NULL);
-	Py_DECREF(args);
+	Py_XDECREF(args);
 	return result;
 }