diff --git a/bin/billing_monthly_cronjob b/bin/billing_monthly_cronjob
index 7fcbc417163db7f3e332e42ebeb1a0ed258e7275..bdf5493d712a4112758de536d6a7ec1c0a528ab0 100755
--- a/bin/billing_monthly_cronjob
+++ b/bin/billing_monthly_cronjob
@@ -86,7 +86,9 @@ EM::Iterator.new(db.exec(
 	<<-SQL
 	SELECT customer_id
 	FROM customer_plans
-	WHERE expires_at <= LOCALTIMESTAMP + '4 days'
+	WHERE
+		expires_at <= LOCALTIMESTAMP + '4 days' AND
+		expires_at > LOCALTIMESTAMP - INTERVAL '1 month'
 	SQL
 ), 3).each(nil, -> { one << :done }) do |row, iter|
 	customer = ExpiringCustomer.new(row["customer_id"])