diff --git a/code/modules/mob/living/basic/space_fauna/changeling/headslug.dm b/code/modules/mob/living/basic/space_fauna/changeling/headslug.dm
index a5cfd15f80b..1f9bd60db9d 100644
--- a/code/modules/mob/living/basic/space_fauna/changeling/headslug.dm
+++ b/code/modules/mob/living/basic/space_fauna/changeling/headslug.dm
@@ -10,6 +10,9 @@
 	icon_living = "headslug"
 	icon_dead = "headslug_dead"
 	gender = NEUTER
+	pass_flags = PASSTABLE | PASSMOB
+	mob_size = MOB_SIZE_SMALL
+	density = FALSE
 	health = 50
 	maxHealth = 50
 	max_stamina = 120