diff --git a/docs/cookbooks/creating_a_derived_dataset.md b/docs/cookbooks/creating_a_derived_dataset.md
index e323eb799a8..8e6ca16f0a2 100644
--- a/docs/cookbooks/creating_a_derived_dataset.md
+++ b/docs/cookbooks/creating_a_derived_dataset.md
@@ -263,7 +263,7 @@ bqetl query backfill <dataset>.<table> --project_id=moz-fx-data-shared-prod -s <
 
 For our example:
 ```bash
-./bqetl query backfill org_mozilla_mozregression_derived.mozregression_aggregates_v1 --s 2020-04-01 --e 2021-02-01
+./bqetl query backfill org_mozilla_mozregression_derived.mozregression_aggregates_v1 --project_id=moz-fx-data-shared-prod -s 2020-04-01 -e 2021-02-01
 ```
 
 **Note**. Alternatively, you can trigger the Airflow DAG to backfill the data. In this case, it is recommended to talk to someone in in Data Engineering or Data SRE to trigger the DAG.