diff --git a/sonic-radiance.love/game/modules/utils/init.lua b/sonic-radiance.love/game/modules/utils/init.lua
index 93643fb..59f0b57 100644
--- a/sonic-radiance.love/game/modules/utils/init.lua
+++ b/sonic-radiance.love/game/modules/utils/init.lua
@@ -8,11 +8,24 @@ function gameutils.getMapPath(maptype, mapname)
 end
 
 function gameutils.getMapDirectory(maptype, mapname)
-  if (maptype ~= "battle") and (maptype ~= "sti") then
+  if not gameutils.validateMapType(maptype) then
     error("Map type " .. maptype .. " doesn't exist.")
   end
 
   return "datas/gamedata/maps/" .. maptype .. "/" .. mapname .. "/"
 end
 
+function gameutils.validateMapType(maptype)
+  local types     = {"battle", "sti"}
+  local validated = false
+
+  for i, type in ipairs(types) do
+    if (type == maptype) then
+      validated = true
+    end
+  end
+
+  return validated
+end
+
 return gameutils