--- a/plugins/mod_muc_mam.lua	Mon Dec 23 23:30:45 2019 +0100
+++ b/plugins/mod_muc_mam.lua	Mon Dec 23 23:31:09 2019 +0100
@@ -354,7 +354,7 @@
 
 -- Handle messages
 local function save_to_history(self, stanza)
-	local room_node, room_host = jid_split(self.jid);
+	local room_node = jid_split(self.jid);
 
 	local stored_stanza = stanza;