diff --git a/playbooks/functional/run.yaml b/playbooks/functional/run.yaml
index 0108b8d16..13e520d31 100644
--- a/playbooks/functional/run.yaml
+++ b/playbooks/functional/run.yaml
@@ -1,4 +1,7 @@
 - hosts: all
+  roles:
+    - ensure-tox
+
   tasks:
     - shell:
         cmd: |
@@ -45,6 +48,6 @@
 
           cd $IRONICCLIENT_DIR
           echo 'Running Functional Tests under Python3'
-          tox -e functionalpy3
+          {{ tox_executable }} -e functionalpy3
         executable: /bin/bash
         chdir: '/opt/stack/python-ironicclient'