diff --git a/ultralytics/solutions/action_recognition.py b/ultralytics/solutions/action_recognition.py
index 9bdf8af651..4ae366f478 100644
--- a/ultralytics/solutions/action_recognition.py
+++ b/ultralytics/solutions/action_recognition.py
@@ -457,7 +457,7 @@ class HuggingFaceVideoClassifier:
         return pred_labels, pred_confs
 
 
-def crop_and_pad(frame, box, margin_percent: int = 10) -> np.ndarray:
+def crop_and_pad(frame: np.ndarray, box: List[int], margin_percent: int = 10) -> np.ndarray:
     """
     Crop box with margin and take square crop from frame.