diff --git a/code/modules/genetics/side_effects.dm b/code/modules/genetics/side_effects.dm
index 83f9bdda79..f3b69b54b5 100644
--- a/code/modules/genetics/side_effects.dm
+++ b/code/modules/genetics/side_effects.dm
@@ -61,13 +61,17 @@
 			H.monkeyize()
 
 proc/trigger_side_effect(mob/living/carbon/human/H)
-	if(!istype(H)) returngit a
-	var/tp = pick(typesof(/datum/genetics/side_effect) - /datum/genetics/side_effect)
-	var/datum/genetics/side_effect/S = new tp
+	spawn
+		if(!istype(H)) return
+		var/tp = pick(typesof(/datum/genetics/side_effect) - /datum/genetics/side_effect)
+		var/datum/genetics/side_effect/S = new tp
 
-	S.start(H)
-	spawn(20)
-		H.Weaken(rand(0, S.duration / 20))
-	sleep(S.duration)
-	H.SetWeakened(0)
-	S.finish(H)
\ No newline at end of file
+		S.start(H)
+		spawn(20)
+			if(!istype(H)) return
+			H.Weaken(rand(0, S.duration / 50))
+		sleep(S.duration)
+
+		if(!istype(H)) return
+		H.SetWeakened(0)
+		S.finish(H)
\ No newline at end of file