diff --git a/README.md b/README.md
index ad8ca16..c8542cf 100644
--- a/README.md
+++ b/README.md
@@ -186,7 +186,7 @@ wget https://images.sick.codes/mac_hdd_ng_auto_monterey.img
 docker run -it \
     --device /dev/kvm \
     -p 50922:10022 \
-    -v "${PWD}/mac_hdd_ng_auto_monterey:/image" \
+    -v "${PWD}/mac_hdd_ng_auto_monterey.img:/image" \
     -v /tmp/.X11-unix:/tmp/.X11-unix \
     -e "DISPLAY=${DISPLAY:-:0.0}" \
     -e "USERNAME=user" \