diff --git a/script/lib/utils.js b/script/lib/utils.js
index e7311f7cc14a..2958c50e9b84 100644
--- a/script/lib/utils.js
+++ b/script/lib/utils.js
@@ -49,7 +49,7 @@ async function getCurrentBranch (gitDir) {
       '--remote'
     ], gitDir)).split('\n')
 
-    branch = branches.filter(b => b === 'master' || b.match(/[0-9]+-[0-9]+-x/))[0]
+    branch = branches.filter(b => b.trim() === 'master' || b.match(/[0-9]+-[0-9]+-x/))[0]
     if (!branch) {
       console.log(`${fail} no release branch exists for this ref`)
       process.exit(1)