diff --git a/installer/data/mysql/atomicupdate/bug_21249-Branch_to_limit_advanced_search_results.sql b/installer/data/mysql/atomicupdate/bug_21249-Branch_to_limit_advanced_search_results.sql
index 08e6e38e01..6d6aa04808 100644
--- a/installer/data/mysql/atomicupdate/bug_21249-Branch_to_limit_advanced_search_results.sql
+++ b/installer/data/mysql/atomicupdate/bug_21249-Branch_to_limit_advanced_search_results.sql
@@ -1 +1 @@
-INSERT INTO systempreferences (variable, value, options, explanation, type) VALUES ('AdvancedSearchBranchFieldToUse', 'homebranch and holdingbranch', 'homebranch|holdingbranch|homebranch and holdingbranch', 'When a library or group of libraries is selected from the advanced search compare the selected branch value against this branch field(s) selected', 'choice');
+INSERT IGNORE INTO systempreferences (variable, value, options, explanation, type) VALUES ('AdvancedSearchBranchFieldToUse', 'homebranch and holdingbranch', 'homebranch|holdingbranch|homebranch and holdingbranch', 'When a library or group of libraries is selected from the advanced search compare the selected branch value against this branch field(s) selected', 'choice');