diff --git a/sw/lib/ocaml/pprz.ml b/sw/lib/ocaml/pprz.ml
index ced07277252..066b91d6313 100644
--- a/sw/lib/ocaml/pprz.ml
+++ b/sw/lib/ocaml/pprz.ml
@@ -738,7 +738,7 @@ module MessagesOfXml(Class:CLASS_Xml) = struct
         | Some x -> sprintf "%f " x in
     let msg = sprintf "%s%s %s" timestamp_string sender s in
     let n = String.length msg in
-    if n > 1000 then (** FIXME: to prevent Ivy bug on long message *)
+    if n > 10000 then (** prevent really long Ivy message, should not happen with normal usage *)
       fprintf stderr "Discarding long ivy message %s (%d bytes)\n%!" msg_name n
     else
       match link_id with