diff --git a/tester/accountmanager.c b/tester/accountmanager.c
index 3d6875453..a3086f9cf 100644
--- a/tester/accountmanager.c
+++ b/tester/accountmanager.c
@@ -121,7 +121,7 @@ void account_create_on_server(Account *account, const LinphoneProxyConfig *refcf
 	
 	vtable.registration_state_changed=account_created_on_server_cb;
 	vtable.auth_info_requested=account_created_auth_requested_cb;
-	lc=configure_lc_from(&vtable,NULL,NULL,account);
+	lc=configure_lc_from(&vtable,liblinphone_tester_file_prefix,NULL,account);
 	
 	cfg=linphone_core_create_proxy_config(lc);
 	linphone_address_set_password(tmp_identity,account->password);