diff --git a/example/post_training_quantization/detection/post_quant.py b/example/post_training_quantization/detection/post_quant.py
index 052fdcb5ec9da888be5b2c9ad15e7047f4161cc4..c179db27ef1b308056625ca154823572fdad965e 100644
--- a/example/post_training_quantization/detection/post_quant.py
+++ b/example/post_training_quantization/detection/post_quant.py
@@ -83,6 +83,7 @@ def main():
         batch_nums=10,
         algo=FLAGS.algo,
         hist_percent=0.999,
+        quantizable_op_type=["conv2d", "depthwise_conv2d"],
         is_full_quantize=False,
         bias_correction=False,
         onnx_format=False,