diff --git a/mmrotate/models/roi_heads/oriented_standard_roi_head.py b/mmrotate/models/roi_heads/oriented_standard_roi_head.py
index 5f0058b7c..220c53d89 100644
--- a/mmrotate/models/roi_heads/oriented_standard_roi_head.py
+++ b/mmrotate/models/roi_heads/oriented_standard_roi_head.py
@@ -142,8 +142,8 @@ def simple_test_bboxes(self,
         Returns:
             tuple[list[Tensor], list[Tensor]]: The first list contains \
                 the boxes of the corresponding image in a batch, each \
-                tensor has the shape (num_boxes, 5) and last dimension \
-                5 represent (cx, cy, w, h, a, score). Each Tensor \
+                tensor has the shape (num_boxes, 6) and last dimension \
+                6 represent (cx, cy, w, h, a, score). Each Tensor \
                 in the second list is the labels with shape (num_boxes, ). \
                 The length of both lists should be equal to batch_size.
         """