diff --git a/code/modules/mob/living/carbon/human/human_defense.dm b/code/modules/mob/living/carbon/human/human_defense.dm
index bf30b08aa658..7ef5a511959b 100644
--- a/code/modules/mob/living/carbon/human/human_defense.dm
+++ b/code/modules/mob/living/carbon/human/human_defense.dm
@@ -28,10 +28,12 @@
 	var/inherent_armor_rating = src.armor?.get_rating(damage_type) //monkestation edit, exists for debugger
 	for(var/obj/item/clothing/clothing_item in covering_clothing)
 		if(clothing_item.body_parts_covered & def_zone.body_part)
-			protection *= (100 - min(clothing_item.get_armor_rating(damage_type), 100)) * 0.01
+			protection *= (100 - min(clothing_item.get_armor_rating(damage_type), 100)) / 100
 	protection *= (100 - min(physiology.armor.get_rating(damage_type), 100)) / 100
 	//monkestation edit start
-	protection *= isnull(inherent_armor_rating) ? 1 : (100 - inherent_armor_rating) / 100
+	if(!isnull(inherent_armor_rating))
+		protection *= (100 - inherent_armor_rating) / 100
+
 	//end monkeststation edit: now checks src.armor so you can give characters inherent armor without targeting physiology or generating clothing
 	//you can use this with "target.set_armor" and it will work on live creatures
 	return 100 - protection