diff --git a/docs/en/user_guides/inference.md b/docs/en/user_guides/inference.md
index 7d2dc5ad0..6f10d5c09 100644
--- a/docs/en/user_guides/inference.md
+++ b/docs/en/user_guides/inference.md
@@ -61,7 +61,7 @@ When calling the script from the command line, the script assumes configs are sa
 from mmocr.ocr import MMOCR
 
 # Load models into memory
-ocr = MMOCR()
+ocr = MMOCR(det='DB_r18', recog='CRNN')
 
 # Inference
 results = ocr.readtext('demo/demo_text_ocr.jpg', print_result=True, show=True)
diff --git a/docs/zh_cn/user_guides/inference.md b/docs/zh_cn/user_guides/inference.md
index 26851331b..a8f4dab56 100644
--- a/docs/zh_cn/user_guides/inference.md
+++ b/docs/zh_cn/user_guides/inference.md
@@ -60,7 +60,7 @@ python mmocr/ocr.py --det DB_r18 --recog CRNN demo/demo_text_ocr.jpg --print-res
 from mmocr.ocr import MMOCR
 
 # 导入模型到内存
-ocr = MMOCR()
+ocr = MMOCR(det='DB_r18', recog='CRNN')
 
 # 推理
 results = ocr.readtext('demo/demo_text_ocr.jpg', print_result=True, show=True)