diff --git a/apache2/re_operators.c b/apache2/re_operators.c
index d159e226..4be27f04 100644
--- a/apache2/re_operators.c
+++ b/apache2/re_operators.c
@@ -2989,7 +2989,7 @@ static int msre_op_rbl_execute(modsec_rec *msr, msre_rule *rule, msre_var *var,
                             log_escape_nq(msr->mp, name_to_check), var->name);
                     break;
                 default:
-                    *error_msg = apr_psprintf(msr->r->pool, "RBL lookup of %s succeeded at %s.",
+                    *error_msg = apr_psprintf(msr->r->pool, "RBL lookup of %s succeeded at %s (WHITE).",
                             log_escape_nq(msr->mp, name_to_check), var->name);
                     break;
             }