diff --git a/README.md b/README.md
index 278f99a..fd17d95 100644
--- a/README.md
+++ b/README.md
@@ -43,6 +43,7 @@ Usage of bq-partition-porter:
 ```
 
 `start date` and `end date` work in an inclusive manner.
+So if you want to just load to/extract from a single partition, just specify the same corresponding date for both `s` and `e` flags.
 
 ## Example:
 ### Export