diff --git a/python/paddle/trainer_config_helpers/optimizers.py b/python/paddle/trainer_config_helpers/optimizers.py
index 819d40feb3d19a0cce4004a7b6fc44b7bd9c9fdb..a53ebe160be3b5d6d115e3e15d059d3d87e80942 100644
--- a/python/paddle/trainer_config_helpers/optimizers.py
+++ b/python/paddle/trainer_config_helpers/optimizers.py
@@ -408,7 +408,7 @@ def settings(batch_size,
 
     args = [
         'batch_size', 'learning_rate', 'learning_rate_decay_a',
-        'learning_rate_decay_b', 'learning_rate_schedule', 'learning_rate_args',
+        'learning_rate_decay_b', 'learning_rate_schedule', 'learning_rate_args'
     ]
     kwargs = dict()
     kwargs['algorithm'] = algorithm