diff --git a/Usage.md b/Usage.md
index 1f07196..78e3b49 100644
--- a/Usage.md
+++ b/Usage.md
@@ -369,3 +369,6 @@ results
         └── xml/
 ```
 
+### No Port Directories
+
+If the `--no-port-dirs` option is provided, directories won't be created for each port found, and all service scan results will be written to the "scans" directory.
\ No newline at end of file