diff --git a/src/lib-smtp/smtp-server-transaction.c b/src/lib-smtp/smtp-server-transaction.c
index ddc10eb6f5..f067975636 100644
--- a/src/lib-smtp/smtp-server-transaction.c
+++ b/src/lib-smtp/smtp-server-transaction.c
@@ -172,7 +172,8 @@ void smtp_server_transaction_last_data(struct smtp_server_transaction *trans,
 
 	trans->cmd = cmd;
 
-	i_assert(array_is_created(&trans->rcpt_to));
+	if (!array_is_created(&trans->rcpt_to))
+		return;
 	array_foreach(&trans->rcpt_to, rcptp)
 		smtp_server_recipient_last_data(*rcptp, cmd);
 }