diff --git a/Omen.lua b/Omen.lua
index c40d9e6..3c032e3 100644
--- a/Omen.lua
+++ b/Omen.lua
@@ -656,7 +656,7 @@ function Omen:UpdateBars()
 	-- Figure out which mob to show threat on, either "target" or "targettarget"
 	-- It has to be attackable and not human controlled, otherwise return
 	local mob = "target"
-	if UnitIsPlayer(mob) or UnitPlayerControlled(mob) or not UnitCanAttack("player", mob) then
+	if UnitExists(mob) and (UnitIsPlayer(mob) or UnitPlayerControlled(mob) or not UnitCanAttack("player", mob)) then
 		guidNameLookup[UnitGUID(mob)] = UnitName(mob)
 		mob = "targettarget"
 	end