diff --git a/code/modules/mob/living/carbon/human/species.dm b/code/modules/mob/living/carbon/human/species.dm
index 16573aa607a..07434e9187d 100644
--- a/code/modules/mob/living/carbon/human/species.dm
+++ b/code/modules/mob/living/carbon/human/species.dm
@@ -1916,7 +1916,7 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 		speedmod -= 0.35
 		H.setMovetype(H.movement_type | FLYING)
 		override_float = TRUE
-		H.pass_flags |= PASSTABLE
+		passtable_on(H, SPECIES_TRAIT)
 		H.OpenWings()
 		H.update_mobility()
 	else
@@ -1924,7 +1924,7 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 		speedmod += 0.35
 		H.setMovetype(H.movement_type & ~FLYING)
 		override_float = FALSE
-		H.pass_flags &= ~PASSTABLE
+		passtable_off(H, SPECIES_TRAIT)
 		H.CloseWings()
 
 /datum/action/innate/flight