diff --git a/update/2_4_36.sql b/update/2_4_36.sql
new file mode 100644
index 000000000..4edccd024
--- /dev/null
+++ b/update/2_4_36.sql
@@ -0,0 +1,7 @@
+-- Fix eliminazione attività collegata
+ALTER TABLE `in_interventi` DROP FOREIGN KEY `in_interventi_ibfk_3`; 
+ALTER TABLE `in_interventi` ADD CONSTRAINT `in_interventi_ibfk_3` FOREIGN KEY (`id_preventivo`) REFERENCES `co_preventivi`(`id`) ON DELETE SET NULL ON UPDATE RESTRICT;
+ALTER TABLE `in_interventi` DROP FOREIGN KEY `in_interventi_ibfk_4`;
+ALTER TABLE `in_interventi` ADD CONSTRAINT `in_interventi_ibfk_4` FOREIGN KEY (`id_contratto`) REFERENCES `co_contratti`(`id`) ON DELETE SET NULL ON UPDATE RESTRICT;
+ALTER TABLE `in_interventi` DROP FOREIGN KEY `in_interventi_ibfk_7`;
+ALTER TABLE `in_interventi` ADD CONSTRAINT `in_interventi_ibfk_7` FOREIGN KEY (`id_ordine`) REFERENCES `or_ordini`(`id`) ON DELETE SET NULL ON UPDATE RESTRICT;
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