--- a/taskcluster/ci/legacy/tasks/builds/android_api_15_partner_sample1.yml
+++ b/taskcluster/ci/legacy/tasks/builds/android_api_15_partner_sample1.yml
@@ -57,16 +57,17 @@ task:
 
     command: ["/bin/bash", "bin/build.sh"]
 
   extra:
     treeherderEnv:
       - production
       - staging
     treeherder:
+      tier: 2
       machine:
         # see https://github.com/mozilla/treeherder/blob/master/ui/js/values.js
         platform: android-4-0-armv7-api15-partner1
     # Rather then enforcing particular conventions we require that all build
     # tasks provide the "build" extra field to specify where the build and tests
     # files are located.
     locations:
       build: 'public/build/target.linux-x86_64.tar.bz2'