diff --git a/db/re/mob_db.txt b/db/re/mob_db.txt
index a58f3d8660..e9b15f2594 100644
--- a/db/re/mob_db.txt
+++ b/db/re/mob_db.txt
@@ -3950,6 +3950,8 @@
 //20843,ILL_ABYSMAL_WITCH
 //20844,PRAY_GIVER
 //20845,SMILE_GIVER
+//20846,MD_HIDDEN_GROUND01
+//20847,MD_HIDDEN_GROUND02
 
 //20873,WAR_NUT