diff --git a/doc/reference.conf b/doc/reference.conf
index bc1262f..4fa38ca 100755
--- a/doc/reference.conf
+++ b/doc/reference.conf
@@ -1287,6 +1287,7 @@ general {
 	/* true no oper flood: Allow opers to NEVER hit flood limits.
 	 * With the above setting, flood limits are set to 4x what they
 	 * are for normal users. With this setting, they're removed entirely.
+	 * For this setting to work, you need to have no_oper_flood enabled as well.
 	 * ENABLE THIS SETTING WITH CAUTION.
 	 */
 	true_no_oper_flood = no;