diff --git a/lib/libufs/ufs_disk_close.3 b/lib/libufs/ufs_disk_close.3
index f332a9bb5de..04cae3965a8 100644
--- a/lib/libufs/ufs_disk_close.3
+++ b/lib/libufs/ufs_disk_close.3
@@ -56,7 +56,7 @@ The structure referenced by the
 pointer must be aligned to at least the alignment specified by
 .Dv LIBUFS_ALIGN
 that is defined in the
-.Lb libufs.h
+.In libufs.h
 header file.
 The disk is opened read-only.
 The specified