diff --git a/doc/usage/cmd/false.rst b/doc/usage/cmd/false.rst
index a17fe86..510377e 100644
--- a/doc/usage/cmd/false.rst
+++ b/doc/usage/cmd/false.rst
@@ -1,3 +1,6 @@
+.. index::
+   single: false (command)
+
 false command
 =============