diff --git a/lua/entities/gmod_wire_adv_emarker.lua b/lua/entities/gmod_wire_adv_emarker.lua
index fc64094e71..8c305b2750 100644
--- a/lua/entities/gmod_wire_adv_emarker.lua
+++ b/lua/entities/gmod_wire_adv_emarker.lua
@@ -144,7 +144,7 @@ function ENT:ApplyDupeInfo(ply, ent, info, GetEntByID)
 		for index, entid in ipairs(info.marks) do
 			local ent = GetEntByID(entid)
 
-			if ent:IsValid() then
+			if IsValid(ent) then
 				table.insert(self.Marks, ent)
 
 				ent:CallOnRemove("AdvEMarker.Unlink" .. self:EntIndex(), function(ent)