diff --git a/lib/ansible/modules/web_infrastructure/ansible_tower/tower_job_template.py b/lib/ansible/modules/web_infrastructure/ansible_tower/tower_job_template.py
index aa351d91587..2158c5c7296 100644
--- a/lib/ansible/modules/web_infrastructure/ansible_tower/tower_job_template.py
+++ b/lib/ansible/modules/web_infrastructure/ansible_tower/tower_job_template.py
@@ -233,7 +233,7 @@ def update_fields(p):
 
     extra_vars = params.get('extra_vars_path')
     if extra_vars is not None:
-        params_update['extra_vars'] = '@' + extra_vars
+        params_update['extra_vars'] = ['@' + extra_vars]
 
     params.update(params_update)
     return params