diff --git a/src/backend/storage/smgr/md.c b/src/backend/storage/smgr/md.c
index 82442db..02983cd 100644
--- a/src/backend/storage/smgr/md.c
+++ b/src/backend/storage/smgr/md.c
@@ -516,12 +516,9 @@ mdclose(SMgrRelation reln, ForkNumber forknum)
 	{
 		MdfdVec    *v = &reln->md_seg_fds[forknum][nopensegs - 1];
 
-		/* if not closed already */
-		if (v->mdfd_vfd >= 0)
-		{
-			FileClose(v->mdfd_vfd);
-			v->mdfd_vfd = -1;
-		}
+		FileClose(v->mdfd_vfd);
+		reln->md_num_open_segs[forknum] = nopensegs - 1;
+		v->mdfd_vfd = -1;
 
 		nopensegs--;
 	}