diff --git a/sys/fs/autofs/autofs_vfsops.c b/sys/fs/autofs/autofs_vfsops.c
--- a/sys/fs/autofs/autofs_vfsops.c
+++ b/sys/fs/autofs/autofs_vfsops.c
@@ -86,7 +86,7 @@
 	strlcpy(amp->am_mountpoint, fspath, sizeof(amp->am_mountpoint));
 	strlcpy(amp->am_options, options, sizeof(amp->am_options));
 	strlcpy(amp->am_prefix, prefix, sizeof(amp->am_prefix));
-	sx_init(&amp->am_lock, "autofslk");
+	sx_init(&amp->am_lock, "autfsm");
 	amp->am_last_fileno = 1;
 
 	vfs_getnewfsid(mp);