diff --git a/fluid/machine_reading_comprehension/run.sh b/fluid/machine_reading_comprehension/run.sh
index 58bd1a21b625c1d43553a41b449d675a2f09d600..b6f9bc19aa6847658234e6aa429f93cdc9773bdc 100644
--- a/fluid/machine_reading_comprehension/run.sh
+++ b/fluid/machine_reading_comprehension/run.sh
@@ -18,4 +18,5 @@ python run.py   \
 --max_p_len 500 \
 --max_q_len 60 \
 --max_a_len 200 \
+--weight_decay 0.0 \
 --drop_rate 0.2 $@\