diff --git a/code/modules/surgery/bodyparts/bodyparts.dm b/code/modules/surgery/bodyparts/bodyparts.dm
index a1b74942e0..63a392bf06 100644
--- a/code/modules/surgery/bodyparts/bodyparts.dm
+++ b/code/modules/surgery/bodyparts/bodyparts.dm
@@ -172,9 +172,8 @@
 	var/total_damage = brute + burn
 
 	if(total_damage > can_inflict)
-		var/excess = total_damage - can_inflict
-		brute = round(brute * (excess / total_damage),DAMAGE_PRECISION)
-		burn = round(burn * (excess / total_damage),DAMAGE_PRECISION)
+		brute = round(brute * (max_damage / total_damage),DAMAGE_PRECISION)
+		burn = round(burn * (max_damage / total_damage),DAMAGE_PRECISION)
 
 	brute_dam += brute
 	burn_dam += burn