diff --git a/ACL_PyTorch/built-in/cv/GroundingDINO/video_demo_npu.py b/ACL_PyTorch/built-in/cv/GroundingDINO/video_demo_npu.py
index ac7b012c0e1b55be70aac7dd5795fec3b81c2bc6..aa081657c35395a2fd26bb1ae0b8008682040706 100644
--- a/ACL_PyTorch/built-in/cv/GroundingDINO/video_demo_npu.py
+++ b/ACL_PyTorch/built-in/cv/GroundingDINO/video_demo_npu.py
@@ -119,7 +119,7 @@ def preprocess(model, batch_frame, text_prompt):
             batch_data['inputs'].append(data_['inputs'])
             batch_data['data_samples'].append(data_['data_samples'])
 
-        return batch_data
+    return batch_data
 
 
 def infer(model, batch_data, tokenized, attention_mask, position_ids):