diff --git a/tools/infer/utility.py b/tools/infer/utility.py
index a87e3eefb2b3e0bcc8d4a4202092989ba56dadd4..dbdb4e33998837414c7833d470c93c6199ad61c9 100755
--- a/tools/infer/utility.py
+++ b/tools/infer/utility.py
@@ -236,8 +236,8 @@ def create_predictor(args, mode, logger):
             config.enable_tensorrt_engine(
                 precision_mode=inference.PrecisionType.Float32,
                 max_batch_size=args.max_batch_size,
-                min_subgraph_size=args.
-                min_subgraph_size)  # skip the minmum trt subgraph
+                min_subgraph_size=args.min_subgraph_size)
+            # skip the minmum trt subgraph
         if mode == "det":
             min_input_shape = {
                 "x": [1, 3, 50, 50],