diff --git a/roles/devstack-tobiko-deploy/tasks/run-stack.yaml b/roles/devstack-tobiko-deploy/tasks/run-stack.yaml
index 0f0bd4f..473bc7c 100644
--- a/roles/devstack-tobiko-deploy/tasks/run-stack.yaml
+++ b/roles/devstack-tobiko-deploy/tasks/run-stack.yaml
@@ -4,11 +4,10 @@
 
 - name: run stack.sh
   become: true
-  become_user: stack
   shell:
     cmd: |
-      sudo chown -R stack.stack /opt/stack/ || exit 66
-      sudo su -l stack -c "
+      chown -R stack.stack /opt/stack/ || exit 66
+      su -l stack -c "
         cd '{{ devstack_dir }}' &&
         ./stack.sh &&
         touch '{{ stack_succeeded_file }}'