diff --git a/code/modules/surgery/organs/organ_external.dm b/code/modules/surgery/organs/organ_external.dm
index a4ba6329b30..1e9adcf7eaf 100644
--- a/code/modules/surgery/organs/organ_external.dm
+++ b/code/modules/surgery/organs/organ_external.dm
@@ -317,9 +317,9 @@
 	//If limb took enough damage, try to cut or tear it off
 	if(owner)
 		if(sharp && !(limb_flags & CANNOT_DISMEMBER))
-			if(limb_brute >= max_damage && prob(original_brute / 2))
+			if(limb_brute + limb_burn >= max_damage && prob(original_brute / 2))
 				droplimb(0, DROPLIMB_SHARP)
-			if(limb_burn >= max_damage && prob(original_burn / 2))
+			if(limb_brute + limb_burn >= max_damage && prob(original_burn / 2))
 				droplimb(0, DROPLIMB_BURN)
 
 	if(owner_old)