diff --git a/FAQ.md b/FAQ.md
index d042292..1cd502b 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -1,5 +1,12 @@
 ## Something doesn't work
 First create a basic configuration following https://github.com/42wim/matterbridge/wiki/How-to-create-your-config
+## Gitter
+### Messages deleted on gitter aren't deleted on other bridges
+Gitter doesn't send delete events to their API, so we can pick those up.   
+When you delete a message on another bridge slack, they will be deleted on gitter though. (matterbridge can delete messages on gitter, but we do not get an event when a message on gitter is deleted)
+
+So slack <=> gitter bridge, deleting messages when on gitter doesn't get deleted on slack.   
+On the same bridge, deleting messages on slack gets also deleted on gitter.
 
 ## Telegram 
 ### Matterbridge is not relaying messages from Telegram