diff --git a/.taskcluster.yml b/.taskcluster.yml
index 58239ba2bc068d6a7cc0b3a9a1df6a9130b3cdfb..869cde13a857b62e0bd4a693f250849d38a2428a 100644
--- a/.taskcluster.yml
+++ b/.taskcluster.yml
@@ -166,7 +166,7 @@ tasks:
                             metadata:
                                 $merge:
                                     - owner: "${ownerEmail}"
-                                      source: 'https://github.com/${repoFullName}/raw/${head_sha}/.taskcluster.yml'
+                                      source: '${repoUrl}/raw/${head_sha}/.taskcluster.yml'
                                     - $if: 'isPullRequest || tasks_for == "github-push"'
                                       then:
                                           name: "Decision Task"