diff --git a/src/Modules/CalcSetup.lua b/src/Modules/CalcSetup.lua
index 48485287..40c95cb7 100644
--- a/src/Modules/CalcSetup.lua
+++ b/src/Modules/CalcSetup.lua
@@ -730,6 +730,9 @@ function calcs.initEnv(build, mode, override, specEnv)
 		modDB:NewMod("Multiplier:AllocatedLifeMastery", "BASE", allocatedMasteryTypes["Life Mastery"])
 	end
 
+	-- add Conditional WeaponnSet# base on weapon set from item
+	modDB:NewMod("Condition:WeaponSet" .. (build.itemsTab.activeItemSet.useSecondWeaponSet and 2 or 1) , "FLAG", true, "Weapon Set")
+
 	-- Build and merge item modifiers, and create list of radius jewels
 	if not accelerate.requirementsItems then
 		local items = {}