diff --git a/devices/statistics_writer/README.md b/devices/statistics_writer/README.md
index 62e940bacb6512eb702cc4fdd816b8ba61153958..1f25f29336b98f365a0f20e78f65c2956c6f1a50 100644
--- a/devices/statistics_writer/README.md
+++ b/devices/statistics_writer/README.md
@@ -19,6 +19,7 @@ This script can be called with the following arguments:
   --output_dir  specifies the folder to write all the files
   --mode        sets the statistics type to be decoded options: "SST", "XST", "BST"
   --debug       takes no arguments, when used prints a lot of extra data to help with debugging
+  --fraction        Configure the writer to only write one every here specified number of statistics. Saves file space
   ```