diff --git a/code/modules/mob/living/simple_animal/hostile/hostile.dm b/code/modules/mob/living/simple_animal/hostile/hostile.dm
index 03bf90b0f5f..aa29a02547b 100644
--- a/code/modules/mob/living/simple_animal/hostile/hostile.dm
+++ b/code/modules/mob/living/simple_animal/hostile/hostile.dm
@@ -115,7 +115,7 @@
 	var/list/L = hearers(src, dist)
 	
 	for (var/obj/mecha/M in mechas_list)
-		if (get_dist(src, M) <= dist)
+		if (M.z == src.z && get_dist(src, M) <= dist)
 			L += M
 	
 	return L