diff --git a/src/uncategorized/remoteSurgery.tw b/src/uncategorized/remoteSurgery.tw
index 0e666287ad575e4318e95909917ff57fe6844db6..feb0de231447a89c7b4ec12ce9ce4c901657d00e 100644
--- a/src/uncategorized/remoteSurgery.tw
+++ b/src/uncategorized/remoteSurgery.tw
@@ -71,7 +71,7 @@
 	<<elseif $activeSlave.faceImplant > 95>>
 		//$His face cannot sustain further cosmetic surgery//
 	<<else>>
-		<<set _artificiality = 25-5*Math.trunc($PC.skill.medicine/50)-5*$surgeryUpgrade>>
+		<<set _artificiality = 25-(5*Math.trunc($PC.skill.medicine/50))-(5*$surgeryUpgrade)>>
 		//Facial surgery can either rework it and improve its attractiveness, or simply make it more attractive. No facial surgery is perfect and each surgery will make it look less natural.
 		<<if $PC.skill.medicine >= 100 && $surgeryUpgrade>>
 			Your surgical skills and the advanced surgical suite will minimize this effect as much as possible.