diff --git a/images/docker-booksonic-air.md b/images/docker-booksonic-air.md
index bf2a3faaa3..2a66f88050 100755
--- a/images/docker-booksonic-air.md
+++ b/images/docker-booksonic-air.md
@@ -64,7 +64,7 @@ services:
       - PUID=1000
       - PGID=1000
       - TZ=Europe/London
-      - CONTEXT_PATH=url-base
+      - CONTEXT_PATH=url-base #optional
     volumes:
       - </path/to/appdata/config>:/config
       - </path/to/audiobooks>:/audiobooks
@@ -83,7 +83,7 @@ docker run -d \
   -e PUID=1000 \
   -e PGID=1000 \
   -e TZ=Europe/London \
-  -e CONTEXT_PATH=url-base \
+  -e CONTEXT_PATH=url-base `#optional` \
   -p 4040:4040 \
   -v </path/to/appdata/config>:/config \
   -v </path/to/audiobooks>:/audiobooks \