diff --git a/guix-data-service/model/git-branch.scm b/guix-data-service/model/git-branch.scm
index 78e149a..a800e8f 100644
--- a/guix-data-service/model/git-branch.scm
+++ b/guix-data-service/model/git-branch.scm
@@ -41,7 +41,7 @@ WHERE git_repository_id = $1
   AND name = $2"
           (list (number->string git-repository-id)
                 name))
-    (#f #f)
+    (() #f)
     (((id)) (string->number id))))
 
 (define (insert-git-branch-entry conn