diff --git a/extensions/FunctionCache.lua b/extensions/FunctionCache.lua
index b05b87d..f80c0f3 100644
--- a/extensions/FunctionCache.lua
+++ b/extensions/FunctionCache.lua
@@ -139,7 +139,9 @@ if (GetCoreExpansion() ~= 0) then
 end
 table.insert(T.Map, "IsBattleground")
 table.insert(T.Map, "IsDungeon")
-table.insert(T.Map, "IsHeroic")
+if (GetCoreExpansion() ~= 0) then
+    table.insert(T.Map, "IsHeroic")
+end
 table.insert(T.Map, "IsRaid")
 
 T.Corpse = {}