diff --git a/winsup/cygwin/include/endian.h b/winsup/cygwin/include/endian.h
index a54326158..1448d8cdd 100644
--- a/winsup/cygwin/include/endian.h
+++ b/winsup/cygwin/include/endian.h
@@ -1,4 +1,4 @@
-/* io.h
+/* endian.h
 
    Copyright 2005 Red Hat, Inc.