diff --git a/app/manifest.webmanifest/route.ts b/app/manifest.webmanifest/route.ts
index 0d2e31fa9..4fd1adb0a 100644
--- a/app/manifest.webmanifest/route.ts
+++ b/app/manifest.webmanifest/route.ts
@@ -7,8 +7,6 @@ import { PRODUCT_DESCRIPTION, PRODUCT_NAME } from '~/app/config';
  * (@see https://github.com/vercel/next.js/issues/56687)
  */
 
-const urlPrefix = process.env.GITHUB_PAGES === 'TRUE' ? `/${process.env.PACKAGE_NAME}` : '';
-
 const data: MetadataRoute.Manifest = {
   name: PRODUCT_NAME,
   short_name: PRODUCT_NAME,
@@ -20,35 +18,11 @@ const data: MetadataRoute.Manifest = {
   theme_color: '#1971c2',
   icons: [
     {
-      src: `${urlPrefix}/icon.svg`,
+      src: `${process.env.GITHUB_PAGES === 'TRUE' ? `/${process.env.PACKAGE_NAME}` : ''}/icon.svg`,
       type: 'image/svg+xml',
       sizes: 'any',
       purpose: 'any',
     },
-    {
-      src: `${urlPrefix}/icon-192.png`,
-      type: 'image/png',
-      sizes: '192x192',
-      purpose: 'any',
-    },
-    {
-      src: `${urlPrefix}/icon-512.png`,
-      type: 'image/png',
-      sizes: '512x512',
-      purpose: 'any',
-    },
-    {
-      src: `${urlPrefix}/icon-maskable-192.png`,
-      type: 'image/png',
-      sizes: '192x192',
-      purpose: 'maskable',
-    },
-    {
-      src: `${urlPrefix}/icon-maskable-512.png`,
-      type: 'image/png',
-      sizes: '512x512',
-      purpose: 'maskable',
-    },
   ],
 };
 
diff --git a/public/icon-192.png b/public/icon-192.png
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diff --git a/public/icon-512.png b/public/icon-512.png
deleted file mode 100644
index 59575d04c..000000000
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diff --git a/public/icon-maskable-192.png b/public/icon-maskable-192.png
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index d495650ec..000000000
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diff --git a/public/icon-maskable-512.png b/public/icon-maskable-512.png
deleted file mode 100644
index 82eb4d791..000000000
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