diff --git a/debian-python3-pip/README.md b/debian-python3-pip/README.md
index 6cb0f4b..1aae16c 100644
--- a/debian-python3-pip/README.md
+++ b/debian-python3-pip/README.md
@@ -42,7 +42,7 @@ $ which jupyter
 
 # 그냥 새로 깔아서 덮어씌워주면 된다. (PATH 앞쪽이라 우선순위 우위)
 $ pip install jupyterlab
-which jupyter
+$ which jupyter
 /home/w/.venv/bin/jupyter
 /home/w/.venv/bin/streamlit