diff --git a/src/hooks/issueBranchName.js b/src/hooks/issueBranchName.js
index 9805ecc..7e8d79c 100644
--- a/src/hooks/issueBranchName.js
+++ b/src/hooks/issueBranchName.js
@@ -12,7 +12,9 @@ module.exports = {
         const { issue, repository } = req.body
         const isBug = issue.labels.length && !!issue.labels.find(label => label.name === 'bug')
         const prefix = isBug ? 'bugfix' : 'feature'
-        const branch = issue.title.replace(/[^a-z0-9\s]/gi, '').replaceAll(' ', '-')
+        const branch = issue.title.replace(/[^a-z0-9\s]/gi, '')
+            .replaceAll(' ', '-')
+            .toLowerCase()
         const branchName = `${prefix}/ISS-${issue.number}-${branch}`
 
         log(`Created branch name ${branchName} in ${repository.full_name}`)