diff --git a/docsite/rst/bestpractices.rst b/docsite/rst/bestpractices.rst
index 32aa54512c5..21313868fca 100644
--- a/docsite/rst/bestpractices.rst
+++ b/docsite/rst/bestpractices.rst
@@ -268,7 +268,7 @@ This makes a dynamic group of hosts matching certain criteria, even if that grou
 
    - hosts: all
      tasks:
-        - group_by key=${ansible_distribution}
+        - group_by: key=${ansible_distribution}
 
    # now just on the CentOS hosts...