diff --git a/code/datums/ai/monkey/monkey_controller.dm b/code/datums/ai/monkey/monkey_controller.dm
index ceaa6d5fd81..264585a1b1c 100644
--- a/code/datums/ai/monkey/monkey_controller.dm
+++ b/code/datums/ai/monkey/monkey_controller.dm
@@ -173,7 +173,7 @@ have ways of interacting with a specific mob and control it.
 /datum/ai_controller/monkey/proc/on_entered(datum/source, atom/movable/arrived, atom/old_loc, list/atom/old_locs)
 	SIGNAL_HANDLER
 	var/mob/living/living_pawn = pawn
-	if(!IS_DEAD_OR_INCAP(living_pawn) && isliving(arrived))
+	if(!IS_DEAD_OR_INCAP(living_pawn) && isliving(arrived) && arrived.density)
 		var/mob/living/in_the_way_mob = arrived
 		in_the_way_mob.knockOver(living_pawn)
 		return