diff --git a/app/layout.tsx b/app/layout.tsx
index 7d2a9fb..5aa1edd 100644
--- a/app/layout.tsx
+++ b/app/layout.tsx
@@ -8,10 +8,11 @@ import {
   APP_NAME,
   APP_THEME_COLOR_DARK,
   APP_THEME_COLOR_LIGHT,
-  APP_URL,
 } from "@/utils/const";
 import "@/globals.css";
 
+const APP_URL = new URL(process.env["BASE_URL"]!);
+
 export const metadata: Metadata = {
   title: APP_NAME,
   description: APP_DESCRIPTION,
diff --git a/app/manifest.ts b/app/manifest.ts
index 9ff4d9f..993932b 100644
--- a/app/manifest.ts
+++ b/app/manifest.ts
@@ -16,7 +16,6 @@ export default function manifest(): MetadataRoute.Manifest {
         src: "icon-maskable.svg",
         sizes: "any",
         type: "image/svg+xml",
-        purpose: "any maskable" as "maskable",
       },
       {
         src: "icon-monochrome.svg",
diff --git a/app/utils/const.ts b/app/utils/const.ts
index e9dc2c2..ba99aa2 100644
--- a/app/utils/const.ts
+++ b/app/utils/const.ts
@@ -1,6 +1,5 @@
 export const APP_NAME = "mmmines!";
 export const APP_DESCRIPTION =
   "an endless, massive multiplayer minesweeper game";
-export const APP_URL = new URL(process.env["BASE_URL"]!);
 export const APP_THEME_COLOR_DARK = "#020617";
 export const APP_THEME_COLOR_LIGHT = "#ffffff";