diff --git a/lib/ansible/modules/cloud/docker/docker_service.py b/lib/ansible/modules/cloud/docker/docker_service.py
index fe9436cf83..afb2e757b6 100644
--- a/lib/ansible/modules/cloud/docker/docker_service.py
+++ b/lib/ansible/modules/cloud/docker/docker_service.py
@@ -85,7 +85,7 @@ options:
   definition:
       description:
         - Provide docker-compose yaml describing one or more services, networks and volumes.
-        - Mutually exclusive with C(project_src) and C(project_files).
+        - Mutually exclusive with C(project_src) and C(files).
       type: complex
       required: false
   hostname_check: