diff --git a/ppstructure/vqa/utils.py b/ppstructure/vqa/utils.py
index 9f6eebb662c8d41542f54795896f4a4f8b3f1b8e..414317c0d14cf285202e61ef3ad2fa9fd3313ce2 100644
--- a/ppstructure/vqa/utils.py
+++ b/ppstructure/vqa/utils.py
@@ -363,7 +363,7 @@ def parse_args():
     parser.add_argument("--output_dir", default=None, type=str, required=True,)
     parser.add_argument("--max_seq_length", default=512, type=int,)
     parser.add_argument("--evaluate_during_training", action="store_true",)
-    parser.add_argument("--num_workers", efault=8, type=int,)
+    parser.add_argument("--num_workers", default=8, type=int,)
     parser.add_argument("--per_gpu_train_batch_size", default=8,
                         type=int, help="Batch size per GPU/CPU for training.",)
     parser.add_argument("--per_gpu_eval_batch_size", default=8,