diff --git a/docsite/rst/playbooks_variables.rst b/docsite/rst/playbooks_variables.rst
index 410ebf7444..729affe562 100644
--- a/docsite/rst/playbooks_variables.rst
+++ b/docsite/rst/playbooks_variables.rst
@@ -172,6 +172,7 @@ The variable value will be used as is, but the template evaluation will raise an
 Set Theory Filters
 --------------------
 All these functions return a unique set from sets or lists.
+
 .. versionadded:: 1.4
 
 To get a unique set from a list::