diff --git a/vta/tutorials/frontend/deploy_detection.py b/vta/tutorials/frontend/deploy_detection.py
index 771801851a48..cbd22a752049 100644
--- a/vta/tutorials/frontend/deploy_detection.py
+++ b/vta/tutorials/frontend/deploy_detection.py
@@ -34,15 +34,15 @@
 #
 # .. code-block:: bash
 #
-# pip3 install "Pillow<7"
+#   pip3 install "Pillow<7"
 #
 # YOLO-V3-tiny Model with Darknet parsing have dependancy with CFFI and CV2 library,
 # we need to install CFFI and CV2 before executing this script.
 #
-# pip3 install "Pillow<7"
+# .. code-block:: bash
 #
-# pip3 install cffi
-# pip3 install opencv-python
+#   pip3 install cffi
+#   pip3 install opencv-python
 #
 # Now return to the python code. Import packages.