diff --git a/automation/taskcluster/decision_task.py b/automation/taskcluster/decision_task.py
index 3b8a3d1c8..b8da8b7d7 100644
--- a/automation/taskcluster/decision_task.py
+++ b/automation/taskcluster/decision_task.py
@@ -124,7 +124,7 @@ def release(channel, engine, is_staging, version_name):
     push_tasks = {}
 
     build_task_id = taskcluster.slugId()
-    build_tasks[build_task_id] = BUILDER.craft_assemble_release_task(variant, is_staging, version_name)
+    build_tasks[build_task_id] = BUILDER.craft_assemble_release_task(variant, channel, is_staging, version_name)
 
     signing_task_id = taskcluster.slugId()
     signing_tasks[signing_task_id] = BUILDER.craft_release_signing_task(
diff --git a/automation/taskcluster/lib/tasks.py b/automation/taskcluster/lib/tasks.py
index 6c5f62d8a..bc5ae7630 100644
--- a/automation/taskcluster/lib/tasks.py
+++ b/automation/taskcluster/lib/tasks.py
@@ -46,11 +46,11 @@ class TaskBuilder(object):
         self.date = arrow.get(date_string)
         self.trust_level = trust_level
 
-    def craft_assemble_release_task(self, variant, is_staging, version_name):
+    def craft_assemble_release_task(self, variant, channel, is_staging, version_name):
         if is_staging:
             secret_index = 'garbage/staging/project/mobile/fenix'
         else:
-            secret_index = 'project/mobile/fenix/{}'.format(variant.build_type)
+            secret_index = 'project/mobile/fenix/{}'.format(channel)
 
         pre_gradle_commands = (
             'python automation/taskcluster/helper/get-secret.py -s {} -k {} -f {}'.format(