diff --git a/lib/ansible/modules/cloud/docker/docker.py b/lib/ansible/modules/cloud/docker/docker.py
index d6d1ad5e625..58cc5fdc82c 100644
--- a/lib/ansible/modules/cloud/docker/docker.py
+++ b/lib/ansible/modules/cloud/docker/docker.py
@@ -422,6 +422,7 @@ EXAMPLES = '''
 '''
 
 HAS_DOCKER_PY = True
+DEFAULT_DOCKER_API_VERSION = None
 
 import sys
 import json