diff --git a/images/docker-tt-rss.md b/images/docker-tt-rss.md
index 4891c4a817..80679bb657 100644
--- a/images/docker-tt-rss.md
+++ b/images/docker-tt-rss.md
@@ -116,7 +116,7 @@ In this instance `PUID=1000` and `PGID=1000`, to find yours use `id user` as bel
 
 ## Application Setup
 
-You must create a user and database for tt-rss to use in a mysql/mariadb or postgresql server. A basic nginx configuration file can be found in /config/nginx/site-confs , edit the file to enable ssl (port 443 by default), set servername etc.. Self-signed keys are generated the first time you run the container and can be found in /config/keys , if needed, you can replace them with your own.
+You must create a user and database for tt-rss to use in a mysql/mariadb or postgresql server. PostgreSQL is recommended, as InnoDB is required if using MySQL. A basic nginx configuration file can be found in /config/nginx/site-confs , edit the file to enable ssl (port 443 by default), set servername etc.. Self-signed keys are generated the first time you run the container and can be found in /config/keys , if needed, you can replace them with your own.
 
 **The default username and password after initial configuration is admin/password**