diff --git a/deploy/portainer/deploy.py b/deploy/portainer/deploy.py
index 583e291..c64d9f8 100644
--- a/deploy/portainer/deploy.py
+++ b/deploy/portainer/deploy.py
@@ -132,7 +132,7 @@ owner = repo_parts[0]
 repo = repo_parts[1]
 
 ref_parts = deploy_ref.strip('/').split('/')
-branch = ref_parts[2]
+branch = ref_parts[-1]
 
 webhook_payload = {
     "type": "gitea",