--- a/taskcluster/ci/legacy/tasks/builds/dbg_linux32.yml
+++ b/taskcluster/ci/legacy/tasks/builds/dbg_linux32.yml
@@ -19,11 +19,12 @@ task:
     env:
       MH_CUSTOM_BUILD_VARIANT_CFG: 'debug'
 
   extra:
     treeherder:
       groupSymbol: tc
       groupName: Submitted by taskcluster
       symbol: B
+      tier: 2
       collection:
         debug: true
 

--- a/taskcluster/ci/legacy/tasks/builds/opt_linux32.yml
+++ b/taskcluster/ci/legacy/tasks/builds/opt_linux32.yml
@@ -16,9 +16,9 @@ task:
   payload:
       supersederUrl: 'https://coalesce.mozilla-releng.net/v1/list/builds.{{project}}.opt_linux32'
 
   extra:
     treeherder:
       groupSymbol: tc
       groupName: Submitted by taskcluster
       symbol: B
-
+      tier: 2