diff --git a/tripleo_ansible/roles/tripleo_container_image_prepare/tasks/main.yml b/tripleo_ansible/roles/tripleo_container_image_prepare/tasks/main.yml
index 5ed9cfa4a..6e58c263a 100644
--- a/tripleo_ansible/roles/tripleo_container_image_prepare/tasks/main.yml
+++ b/tripleo_ansible/roles/tripleo_container_image_prepare/tasks/main.yml
@@ -48,7 +48,7 @@
         content: "{{ tripleo_container_image_prepare_roles }}"
 
     - name: "Run tripleo_container_image_prepare logged to: {{ tripleo_container_image_prepare_log_file }}"
-      command: >-
+      shell: >-
         /usr/bin/tripleo-container-image-prepare
         --roles-file {{ role_data.path }}
         --environment-file {{ prepare_param.path }}
@@ -57,6 +57,7 @@
         {% if (tripleo_container_image_prepare_debug | bool) %}
         --debug
         {% endif %}
+        >/dev/null
       no_log: "{{ not tripleo_container_image_prepare_debug | bool }}"
       when:
         - (tripleo_container_image_prepare_content | dict2items | length) > 0