diff --git a/hosts/common/programs/chatty.nix b/hosts/common/programs/chatty.nix
index 1caceed0..f648d644 100644
--- a/hosts/common/programs/chatty.nix
+++ b/hosts/common/programs/chatty.nix
@@ -38,7 +38,9 @@ in
     suggestedPrograms = [ "gnome-keyring" ];
     persist.private = [
       ".local/share/chatty"  # matrix avatars and files
-      ".purple/chatty"  # not just XMPP; without this Chatty will regenerate its device-id every boot
+      # not just XMPP; without this Chatty will regenerate its device-id every boot.
+      # .purple/ contains XMPP *and* Matrix auth, logs, avatar cache, and a bit more
+      ".purple"
     ];
   };
 }