diff --git a/backend/internal/router/router_test.go b/backend/internal/router/router_test.go
index 139b30a9..515d74ee 100644
--- a/backend/internal/router/router_test.go
+++ b/backend/internal/router/router_test.go
@@ -1081,6 +1081,10 @@ func TestDashboardIndexServesChatwootShell(t *testing.T) {
 	if err := os.WriteFile(filepath.Join(dist, "assets", "app.js"), []byte(`document.documentElement.dataset.runtimeHost = window.__GOCHAT_CONFIG__?.hostURL || "missing";`), 0o644); err != nil {
 		t.Fatal(err)
 	}
+	favicon := []byte("gochat favicon")
+	if err := os.WriteFile(filepath.Join(dist, "favicon.ico"), favicon, 0o644); err != nil {
+		t.Fatal(err)
+	}
 	t.Setenv("GOCHAT_FRONTEND_DIST", dist)
 	t.Setenv("INSTALLATION_NAME", "GoChat Test")
 	t.Setenv("FRONTEND_URL", "https://app.example.test/")
@@ -1146,6 +1150,10 @@ func TestDashboardIndexServesChatwootShell(t *testing.T) {
 	if asset.Code != http.StatusOK || asset.Body.String() != "body{}" {
 		t.Fatalf("expected built asset, got %d %q", asset.Code, asset.Body.String())
 	}
+	faviconResponse := performGet(engine, "/favicon.ico")
+	if faviconResponse.Code != http.StatusOK || faviconResponse.Body.String() != string(favicon) {
+		t.Fatalf("expected built favicon, got %d %q", faviconResponse.Code, faviconResponse.Body.String())
+	}
 }
 
 func TestDashboardIndexRejectsJSONLikeChatwoot(t *testing.T) {