diff --git a/installer/data/mysql/atomicupdate/bug_5979-add_opacisbd_syspref.sql b/installer/data/mysql/atomicupdate/bug_5979-add_opacisbd_syspref.sql
index 4712824bc0..735d0228bc 100644
--- a/installer/data/mysql/atomicupdate/bug_5979-add_opacisbd_syspref.sql
+++ b/installer/data/mysql/atomicupdate/bug_5979-add_opacisbd_syspref.sql
@@ -1 +1 @@
-INSERT INTO `systempreferences` (variable,value,options,explanation,type)  SELECT 'OPACISBD', value, '70|10', 'Allows to define ISBD view in OPAC', 'Textarea' FROM `systempreferences` WHERE variable = 'ISBD';
+INSERT IGNORE INTO `systempreferences` (variable,value,options,explanation,type)  SELECT 'OPACISBD', value, '70|10', 'Allows to define ISBD view in OPAC', 'Textarea' FROM `systempreferences` WHERE variable = 'ISBD';