diff --git a/usr.bin/make/dir.c b/usr.bin/make/dir.c
index 4ea872af2c23..d1364a7aed1a 100644
--- a/usr.bin/make/dir.c
+++ b/usr.bin/make/dir.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: dir.c,v 1.233 2020/11/29 10:57:16 rillig Exp $	*/
+/*	$NetBSD: dir.c,v 1.234 2020/11/29 11:17:41 rillig Exp $	*/
 
 /*
  * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
@@ -136,7 +136,7 @@
 #include "job.h"
 
 /*	"@(#)dir.c	8.2 (Berkeley) 1/2/94"	*/
-MAKE_RCSID("$NetBSD: dir.c,v 1.233 2020/11/29 10:57:16 rillig Exp $");
+MAKE_RCSID("$NetBSD: dir.c,v 1.234 2020/11/29 11:17:41 rillig Exp $");
 
 #define DIR_DEBUG0(text) DEBUG0(DIR, text)
 #define DIR_DEBUG1(fmt, arg1) DEBUG1(DIR, fmt, arg1)
@@ -225,6 +225,7 @@ struct CachedDir {
 	/*
 	 * The number of SearchPaths that refer to this directory.
 	 * Plus the number of global variables that refer to this directory.
+	 * References from openDirs do not count though.
 	 *
 	 * TODO: Check the reference counting; see Dir_Expand, partPath.
 	 */
@@ -1521,6 +1522,7 @@ Dir_AddDir(SearchPath *path, const char *name)
 			(void)HashSet_Add(&dir->files, dp->d_name);
 		}
 		(void)closedir(d);
+
 		OpenDirs_Add(&openDirs, dir);
 		if (path != NULL)
 			Lst_Append(path, dir);