diff --git a/Lib/heapq.py b/Lib/heapq.py
index 3233cdb09659..02c7944eedd5 100644
--- a/Lib/heapq.py
+++ b/Lib/heapq.py
@@ -1,4 +1,4 @@
-# -*- coding: Latin-1 -*-
+# -*- coding: latin-1 -*-
 
 """Heap queue algorithm (a.k.a. priority queue).