diff --git a/ql/lib/ext/tj-actions_branch-names.model.yml b/ql/lib/ext/tj-actions_branch-names.model.yml
index 20383f415c2..1618eddf2d8 100644
--- a/ql/lib/ext/tj-actions_branch-names.model.yml
+++ b/ql/lib/ext/tj-actions_branch-names.model.yml
@@ -4,7 +4,6 @@ extensions:
       extensible: sourceModel
     data:
       # https://github.com/tj-actions/branch-names
-      - ["tj-actions/branch-names", "*", "output.base_ref_branch", "pull_request_target", "PR base branch"]
       - ["tj-actions/branch-names", "*", "output.current_branch", "pull_request_target", "PR current branch"]
       - ["tj-actions/branch-names", "*", "output.head_ref_branch", "pull_request_target", "PR head branch"]
       - ["tj-actions/branch-names", "*", "output.ref_branch", "pull_request_target", "Branch tirggering workflow run"]