diff --git a/README.md b/README.md
index 247973f..0ca3fa9 100644
--- a/README.md
+++ b/README.md
@@ -220,8 +220,6 @@ screen.calculateDrugScreen(
   t0='T0',
   untreated='DMSO',  # replace with the label for untreated condition
   treated='Drug',    # replace with the label for treated condition
-  db_untreated=1,    # replace with doubling rate of untreated condition
-  db_treated=1,      # replace with doubling rate of treated condition
   score_level='compare_reps'
 )
 ```