diff --git a/libervia/backend/plugins/plugin_xep_0313.py b/libervia/backend/plugins/plugin_xep_0313.py
index a0c7fc49..4ccdf834 100644
--- a/libervia/backend/plugins/plugin_xep_0313.py
+++ b/libervia/backend/plugins/plugin_xep_0313.py
@@ -179,8 +179,8 @@ class XEP_0313:
                 except StanzaError as e:
                     log.warning(
                         f"Can't retrieve MAM archives: {e}\n"
-                        f"{xml_tools.pp_elt(mam_req.toElement())}\n"
-                        f"{xml_tools.pp_elt(e.iq.toElement()) if e.iq else ''}"
+                        f"{xml_tools.p_fmt_elt(mam_req.toElement())}\n"
+                        f"{xml_tools.p_fmt_elt(e.iq.toElement()) if e.iq else ''}"
                     )
                     return
                 except Exception as e: