--- a/mozilla/config.py
+++ b/mozilla/config.py
@@ -2418,18 +2418,18 @@ BRANCHES['mozilla-beta']['tc_indexes'] =
             "ci_system": "tc",
         },
         "linux64": {
             "signed": "gecko.v2.mozilla-beta.signed-nightly.revision.{rev}.devedition-l10n.linux64-opt.en-US",
             "unsigned": "gecko.v2.mozilla-beta.revision.{rev}.devedition-l10n.linux64-opt.en-US",
             "ci_system": "tc",
         },
         "macosx64": {
-            "signed": "gecko.v2.mozilla-beta.revision.{rev}.devedition.macosx64-opt",
-            "unsigned": "gecko.v2.mozilla-beta.revision.{rev}.devedition.macosx64-opt",
+            "signed": "gecko.v2.mozilla-beta.revision.{rev}.firefox.macosx64-devedition-opt",
+            "unsigned": "gecko.v2.mozilla-beta.revision.{rev}.firefox.macosx64-devedition-opt",
             "ci_system": "bb",
             # Uncomment when TC is tier-1
             # "repackage": "gecko.v2.mozilla-beta.revision.{rev}.devedition-l10n.macosx64-nightly-repackage.en-US",
             # "repackage-signing": "gecko.v2.mozilla-beta.revision.{rev}.devedition-l10n.macosx64-nightly-repackage-signing.en-US",
             # "ci_system": "tc",
         },
         "win32": {
             "signed": "gecko.v2.mozilla-beta.revision.{rev}.devedition.win32-opt",