1diff --git a/plugins/per-directory-history/README.md b/plugins/per-directory-history/README.md
2index 2816c11ba5122cd9962472535cf2a9dfb36b0c6c..c7d062a0c807a8d439282003e2690cca1e175281 100644
3--- a/plugins/per-directory-history/README.md
4+++ b/plugins/per-directory-history/README.md
5@@ -35,6 +35,7 @@ toggle set the `PER_DIRECTORY_HISTORY_TOGGLE` environment variable.
6 function above (default `^G`)
7 * `PER_DIRECTORY_HISTORY_PRINT_MODE_CHANGE` is a variable which toggles whether
8 the current mode is printed to the screen following a mode change (default `true`)
9+* `HISTORY_START_WITH_GLOBAL` is a global variable that defines how to start the plugin: global or local (default `false`)
1011 ## History
12