2 files changed, 12 insertions, 2 deletions

diff --git a/support/doc/tools.md b/support/doc/tools.md
index 0addc0803..cb3944595 100644
--- a/support/doc/tools.md
+++ b/support/doc/tools.md
@@ -113,4 +113,13 @@ To delete them (a confirmation will be demanded first):
 
 ```
 $ sudo -u peertube NODE_CONFIG_DIR=/var/www/peertube/config NODE_ENV=production npm run prune-storage
+```
+
+### update-host.js
+
+If you started PeerTube with a domain, and then changed it you will have invalid torrent files and invalid URLs in your database.
+To fix this, you have to run:
+
+```
+$ sudo -u peertube NODE_CONFIG_DIR=/var/www/peertube/config NODE_ENV=production npm run update-host
 ```
\ No newline at end of file
diff --git a/support/doc/translation.md b/support/doc/translation.md
index 3ad239278..52045083c 100644
--- a/support/doc/translation.md
+++ b/support/doc/translation.md
@@ -18,7 +18,8 @@ If you don't see your locale in the platform, please [create an issue](https://g
 
 There are 4 files:
  * **angular**: contains client strings
- * **player**: contains player strings
- * **server**: contains server strings (language, licence...)
+ * **player**: contains player strings. 
+ Most of the strings come from VideoJS, so you can help yourself by using [video.js JSON files](https://github.com/videojs/video.js/tree/master/lang)
+ * **server**: contains server strings (privacies, licences...)
  * **iso639**: contains iso639 (languages) strings used by PeerTube to describe the audio language of a particular video.
  It's the reason why these strings should be translated too. There are many strings so do not hesitate to translate only main audio languages.