diff --git a/frontend/public/favicon.ico b/frontend/public/favicon.ico
new file mode 100644
index 00000000..e5cb1e98
Binary files /dev/null and b/frontend/public/favicon.ico differ
diff --git a/frontend/scripts/check-build.mjs b/frontend/scripts/check-build.mjs
index f0a2c67e..7d016ae9 100644
--- a/frontend/scripts/check-build.mjs
+++ b/frontend/scripts/check-build.mjs
@@ -20,6 +20,12 @@ assert.match(
   html,
   /<script\b[^>]*\bsrc="\/runtime-config\.js"[^>]*><\/script>/
 );
+assert.ok(
+  readFileSync(new URL('../dist/favicon.ico', import.meta.url)).equals(
+    readFileSync(new URL('../public/favicon-32x32.png', import.meta.url))
+  ),
+  'favicon.ico must reuse the GoChat favicon'
+);
 assert.ok(
   html.indexOf('/runtime-config.js') < html.indexOf('type="module"'),
   'runtime config must load before the app module'