diff --git a/downloads-generation/models_class1_unselected/GENERATE.sh b/downloads-generation/models_class1_unselected/GENERATE.sh
index 19dc08b47ec00c5bf79aabee31da2e9990c4a62b..47c51003b05ead3e193afb526354697c5bcf0dfc 100755
--- a/downloads-generation/models_class1_unselected/GENERATE.sh
+++ b/downloads-generation/models_class1_unselected/GENERATE.sh
@@ -44,7 +44,6 @@ time mhcflurry-class1-train-allele-specific-models \
     --allele-sequences class1_pseudosequences.csv \
     --hyperparameters hyperparameters.yaml \
     --out-models-dir models \
-    --percent-rank-calibration-num-peptides-per-length 0 \
     --held-out-fraction-reciprocal 10 \
     --min-measurements-per-allele 50 \
     --num-jobs $(expr $PROCESSORS \* 2) --gpus $GPUS --max-workers-per-gpu 2 --max-tasks-per-worker 50