diff --git a/examples/3.x_api/pytorch/cv/mixed_precision/README.md b/examples/3.x_api/pytorch/cv/mixed_precision/README.md
index 3281801578f..597c9e2a3fb 100644
--- a/examples/3.x_api/pytorch/cv/mixed_precision/README.md
+++ b/examples/3.x_api/pytorch/cv/mixed_precision/README.md
@@ -36,9 +36,9 @@ bash run_autotune.sh --input_model=resnet18 --dataset_location=/path/to/imagenet
 ## Benchmark
 ```Shell
 # run optimized performance
-bash run_benchmark.sh --input_model=resnet18 --dataset_location=/path/to/imagenet --mode=performance --batch_size=1 --optimized=true --iters=500
+bash run_benchmark.sh --input_model=resnet18 --dataset_location=/path/to/imagenet --mode=performance --batch_size=100 --optimized=true --iters=500
 # run optimized accuracy
-bash run_benchmark.sh --input_model=resnet18 --dataset_location=/path/to/imagenet --mode=accuracy --batch_size=100 --optimized=true
+bash run_benchmark.sh --input_model=resnet18 --dataset_location=/path/to/imagenet --mode=accuracy --batch_size=1 --optimized=true
 ```
 
 
diff --git a/neural_compressor/common/utils/constants.py b/neural_compressor/common/utils/constants.py
index 629a3f5743e..86a4c342f58 100644
--- a/neural_compressor/common/utils/constants.py
+++ b/neural_compressor/common/utils/constants.py
@@ -37,7 +37,7 @@
 AUTOROUND = "autoround"
 FP8_QUANT = "fp8_quant"
 MX_QUANT = "mx_quant"
-MIX_PRECISION = "mix_precision"
+MIXED_PRECISION = "mixed_precision"
 
 # options
 import datetime