diff --git a/.env.example b/.env.example
index b5393aa..d29ab73 100644
--- a/.env.example
+++ b/.env.example
@@ -12,6 +12,10 @@ PBW_LISTEN_HOST=""
 # The port on which the pgbackweb will listen for incoming HTTP requests.
 PBW_LISTEN_PORT=""
 
+# Path prefix to use for all routes. If you set this to e.g. "/pgbackweb",
+# the web interface will be available at http://<host>:<port>/pgbackweb
+PBW_PATH_PREFIX=""
+
 # Your timezone, this impacts logging, backup filenames and default timezone
 # in the web interface.
 TZ=""