diff --git a/README.md b/README.md
index a677798..3b11c34 100644
--- a/README.md
+++ b/README.md
@@ -50,10 +50,13 @@ It will ask for your sudo password only if necessary.
 ### Docker for Mac
 
 If you are using [Docker for Mac](https://docs.docker.com/docker-for-mac/),
-you need to add `/usr/local/bin` to the list of mountable directories. This
-allows Dock to mount itself within the container so you can recursively execute
-scripts with Dock shebang lines without creating nested Dock containers. You
-can add the path via **Preferences** -> **File Sharing**:
+you need to add `/usr/local/Cellar` (if you installed Dock using Homebrew) or
+`/usr/local/bin` (if you installed using the Bash script) to the list of mountable
+directories.
+
+This allows Dock to mount itself within the container so you can recursively
+execute Dock within Dock containers. You can add the path via
+**Preferences** -> **File Sharing**:
 
 <p align="center">
   <img src="https://raw.githubusercontent.com/brigade/dock/master/doc/img/docker-for-mac-file-sharing.png" width="50%" alt="Docker for Mac File Sharing" />
diff --git a/doc/img/docker-for-mac-file-sharing.png b/doc/img/docker-for-mac-file-sharing.png
index 4b240ce..15eec78 100644
Binary files a/doc/img/docker-for-mac-file-sharing.png and b/doc/img/docker-for-mac-file-sharing.png differ