diff --git a/roles/docker/docker-storage/defaults/main.yml b/roles/docker/docker-storage/defaults/main.yml
index 9785dac47..81afdc0dd 100644
--- a/roles/docker/docker-storage/defaults/main.yml
+++ b/roles/docker/docker-storage/defaults/main.yml
@@ -6,10 +6,10 @@ docker_container_storage_setup_container_thinpool: docker-pool
 docker_container_storage_setup_data_size: 40%FREE
 docker_container_storage_setup_min_data_size: 2G
 docker_container_storage_setup_chunk_size: 512K
-docker_container_storage_setup_growpart: false
-docker_container_storage_setup_auto_extend_pool: yes
+docker_container_storage_setup_growpart: "false"
+docker_container_storage_setup_auto_extend_pool: "yes"
 docker_container_storage_setup_pool_autoextend_threshold: 60
 docker_container_storage_setup_pool_autoextend_percent: 20
 docker_container_storage_setup_device_wait_timeout: 60
-docker_container_storage_setup_wipe_signatures: false
+docker_container_storage_setup_wipe_signatures: "false"
 docker_container_storage_setup_container_root_lv_size: 40%FREE