diff --git a/README.md b/README.md
index dd1309e..bc5c074 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ ART-XC upper limits django application
 
 Allows to populate the database with data for a survey in healpix format. Takes about 100 minutes for an nside=4096 map to load using sqlite. Supports resuming after interruption.
 
-Syntax: python manage.py load_survey --counts='*path_to_counts_map*' --exposure='*path_to_exposure_map*' --survey=*integer survey number*
+Syntax: python manage.py load_survey --counts='*path_to_counts_map*' --exposure='*path_to_exposure_map*' --survey_number=*integer survey number* --batch_size=*number of pixels to insert in one transaction*
 
 ## Models (models.py)