diff --git a/packages/flutter_tools/lib/src/artifacts.dart b/packages/flutter_tools/lib/src/artifacts.dart
index e8309f64444..bc2a8502e60 100644
--- a/packages/flutter_tools/lib/src/artifacts.dart
+++ b/packages/flutter_tools/lib/src/artifacts.dart
@@ -41,13 +41,13 @@ String _getNameForTargetPlatform(TargetPlatform platform) {
 // Keep in sync with https://github.com/flutter/engine/blob/master/sky/tools/release_engine.py
 // and https://github.com/flutter/buildbot/blob/master/travis/build.sh
 String _getCloudStorageBaseUrl({String category, String platform, String revision}) {
-  if (platform == 'android-arm') {
+  if (platform == 'darwin-x64') {
     // In the fullness of time, we'll have a consistent URL pattern for all of
-    // our artifacts, but, for the time being, Android artifacts are stored in a
+    // our artifacts, but, for the time being, Mac OS X artifacts are stored in a
     // different cloud storage bucket.
-    return 'https://storage.googleapis.com/mojo/sky/${category}/${platform}/${revision}/';
+    return 'https://storage.googleapis.com/mojo_infra/flutter/${platform}/${revision}/';
   }
-  return 'https://storage.googleapis.com/mojo_infra/flutter/${platform}/${revision}/';
+  return 'https://storage.googleapis.com/mojo/sky/${category}/${platform}/${revision}/';
 }
 
 enum ArtifactType {