diff --git a/code/modules/mob/living/carbon/carbon.dm b/code/modules/mob/living/carbon/carbon.dm
index a496526008f..3b902d21ecf 100644
--- a/code/modules/mob/living/carbon/carbon.dm
+++ b/code/modules/mob/living/carbon/carbon.dm
@@ -92,10 +92,12 @@
 
 
 /mob/living/carbon/proc/vomit(var/lost_nutrition = 10, var/blood = 0, var/stun = 1, var/distance = 0, var/message = 1)
-	if(src.is_muzzled())
+	if(ismachineperson(src)) //IPCs do not vomit particulates
+		return FALSE
+	if(is_muzzled())
 		if(message)
 			to_chat(src, "<span class='warning'>The muzzle prevents you from vomiting!</span>")
-		return 0
+		return FALSE
 	if(stun)
 		Stun(4)
 	if(nutrition < 100 && !blood)
@@ -125,7 +127,7 @@
 			T = get_step(T, dir)
 			if(is_blocked_turf(T))
 				break
-	return 1
+	return TRUE
 
 /mob/living/carbon/gib()
 	. = death(1)