diff --git a/packages/firebase_core/firebase_core/CHANGELOG.md b/packages/firebase_core/firebase_core/CHANGELOG.md
index 56dc50d2501a..1ca49a6ab2ac 100644
--- a/packages/firebase_core/firebase_core/CHANGELOG.md
+++ b/packages/firebase_core/firebase_core/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.4.2+1
+
+* Check `kIsWeb` before checking `Platform.isIos` for the default app name.
+
 ## 0.4.2
 
 * Migrate to `firebase_core_platform_interface`.
diff --git a/packages/firebase_core/firebase_core/lib/firebase_core.dart b/packages/firebase_core/firebase_core/lib/firebase_core.dart
index 02e92d5340cd..5caa99dcdd0d 100644
--- a/packages/firebase_core/firebase_core/lib/firebase_core.dart
+++ b/packages/firebase_core/firebase_core/lib/firebase_core.dart
@@ -8,6 +8,7 @@ import 'dart:async';
 import 'dart:io' show Platform;
 
 import 'package:firebase_core_platform_interface/firebase_core_platform_interface.dart';
+import 'package:flutter/foundation.dart' show kIsWeb;
 import 'package:meta/meta.dart';
 
 export 'package:firebase_core_platform_interface/firebase_core_platform_interface.dart'
diff --git a/packages/firebase_core/firebase_core/lib/src/firebase_app.dart b/packages/firebase_core/firebase_core/lib/src/firebase_app.dart
index 415388cbefed..aece852c4850 100644
--- a/packages/firebase_core/firebase_core/lib/src/firebase_app.dart
+++ b/packages/firebase_core/firebase_core/lib/src/firebase_app.dart
@@ -12,7 +12,7 @@ class FirebaseApp {
   final String name;
 
   static final String defaultAppName =
-      Platform.isIOS ? '__FIRAPP_DEFAULT' : '[DEFAULT]';
+      (!kIsWeb && Platform.isIOS) ? '__FIRAPP_DEFAULT' : '[DEFAULT]';
 
   /// A copy of the options for this app. These are non-modifiable.
   ///
diff --git a/packages/firebase_core/firebase_core/pubspec.yaml b/packages/firebase_core/firebase_core/pubspec.yaml
index 4506087f4685..0fa635270dfd 100644
--- a/packages/firebase_core/firebase_core/pubspec.yaml
+++ b/packages/firebase_core/firebase_core/pubspec.yaml
@@ -3,7 +3,7 @@ description: Flutter plugin for Firebase Core, enabling connecting to multiple
   Firebase apps.
 author: Flutter Team <flutter-dev@googlegroups.com>
 homepage: https://github.com/FirebaseExtended/flutterfire/tree/master/packages/firebase_core/firebase_core
-version: 0.4.2
+version: 0.4.2+1
 
 flutter:
   plugin: