diff --git a/js/common/Maintenance.js b/js/common/Maintenance.js
index 2a01ff14..d5429a7f 100644
--- a/js/common/Maintenance.js
+++ b/js/common/Maintenance.js
@@ -1258,7 +1258,7 @@ module.exports = ( function() {
         if ( errorIfMissing ) {
           throw new Error( `Could not find a tracked modified branch for ${repo} ${branch}` );
         }
-        releaseBranches = releaseBranches || await Maintenance.getMaintenanceBranches( testRepo => testRepo === repo );
+        releaseBranches = releaseBranches || await Maintenance.getMaintenanceBranches( releaseBranch => releaseBranch.repo === repo );
         const releaseBranch = releaseBranches.find( release => release.repo === repo && release.branch === branch );
         assert( releaseBranch, `Could not find a release branch for repo=${repo} branch=${branch}` );
 
diff --git a/js/grunt/Gruntfile.js b/js/grunt/Gruntfile.js
index 7784a093..d874bb79 100644
--- a/js/grunt/Gruntfile.js
+++ b/js/grunt/Gruntfile.js
@@ -239,7 +239,7 @@ module.exports = function( grunt ) {
 
       assert( order === 'alphabetical' || order === 'date' );
 
-      const branches = await Maintenance.getMaintenanceBranches( filterRepo => !repo || filterRepo === repo, true, true );
+      const branches = await Maintenance.getMaintenanceBranches( releaseBranch => !repo || releaseBranch.repo === repo, true, true );
 
       let structures = [];
       for ( const branch of branches ) {