diff --git a/src/manifest.json b/src/manifest.json
index f0263d0..e33eedf 100644
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -1,7 +1,9 @@
 {
+  "$schema": "https://raw.githubusercontent.com/SchemaStore/schemastore/master/src/schemas/json/web-manifest.json",
   "name": "Audience",
   "short_name": "Audience",
   "description": "Crowd reaction soundboard",
+  "display": "fullscreen",
   "icons": [
     {
       "src": "android-chrome-192x192.png",
@@ -12,12 +14,6 @@
       "src": "android-chrome-512x512.png",
       "sizes": "512x512",
       "type": "image/png"
-    },
-    {
-      "src": "android-chrome-512x512.png",
-      "sizes": "512x512",
-      "type": "image/png",
-      "purpose": "any maskable"
     }
   ]
 }