diff --git a/code/modules/surgery/limb_grafting.dm b/code/modules/surgery/limb_grafting.dm
index 6f710587556..bf2f2969eb4 100644
--- a/code/modules/surgery/limb_grafting.dm
+++ b/code/modules/surgery/limb_grafting.dm
@@ -15,6 +15,11 @@
 	if(!C.get_bodypart(user.zone_selected)) //can only start if limb is missing
 		return 1
 
+/datum/surgery/limb_grafting/next_step(mob/user, intent)
+	if(target && target.get_bodypart(location)) //if limb now exists, surgery is complete
+		return FALSE
+	return ..() //otherwise proceed normally
+
 /datum/surgery_step/graft_limb
 	name = "graft limb"
 	implements = list(