diff --git a/code/modules/events/mass_hallucination.dm b/code/modules/events/mass_hallucination.dm
index 49bf9b301a6..4d7a048795c 100644
--- a/code/modules/events/mass_hallucination.dm
+++ b/code/modules/events/mass_hallucination.dm
@@ -1,3 +1,4 @@
 /datum/event/mass_hallucination/start()
-	for(var/mob/living/carbon/C in living_mob_list)
-		C.hallucination += rand(70, 100)
\ No newline at end of file
+	for(var/mob/living/carbon/human/C in living_mob_list)
+		if(!(C.species.flags & IS_SYNTHETIC))
+			C.hallucination += rand(70, 100)
\ No newline at end of file