diff --git a/libervia/backend/plugins/plugin_comp_ap_gateway/__init__.py b/libervia/backend/plugins/plugin_comp_ap_gateway/__init__.py
index 17c92f03..1fd73900 100644
--- a/libervia/backend/plugins/plugin_comp_ap_gateway/__init__.py
+++ b/libervia/backend/plugins/plugin_comp_ap_gateway/__init__.py
@@ -840,7 +840,7 @@ class APGateway:
         @raise PermissionError: non local jid is used when gateway doesn't allow them
         """
         if ap_account.count("@") != 1:
-            raise ValueError("Invalid AP account")
+            raise ValueError(f"Invalid AP account {ap_account!r}")
         if ap_account.startswith("___"):
             encoded = True
             ap_account = ap_account[3:]