diff --git a/images/docker-syslog-ng.md b/images/docker-syslog-ng.md
index 3d251cdd7..0fe873402 100755
--- a/images/docker-syslog-ng.md
+++ b/images/docker-syslog-ng.md
@@ -37,6 +37,8 @@ The architectures supported by this image are:
 
 Edit `/config/syslog-ng.conf` to configure your logging sources and destinations. Note: As the application does not run as root you cannot listen on ports < 1024.
 
+The application pid, control file, etc. are all kept in /config so when using tools such as `syslog-ng-ctl` you need to specify the path e.g. `syslog-ng-ctl reload -c /config/syslog-ng.ctl`
+
 More info at [syslog-ng](https://www.syslog-ng.com/technical-documents/list/syslog-ng-open-source-edition).
 
 ## Usage