diff --git a/source_control/subversion b/source_control/subversion
index ad8bc431bdd..b868083927f 100644
--- a/source_control/subversion
+++ b/source_control/subversion
@@ -23,7 +23,7 @@ DOCUMENTATION = '''
 module: subversion
 short_description: Deploys a subversion repository.
 description:
-   - Deploy given repository URL / revision to dest.
+   - Deploy given repository URL / revision to dest. If dest exists, update to the specified revision, otherwise perform a checkout.
 version_added: "0.7"
 author: Dane Summers, njharman@gmail.com
 notes: