diff --git a/installer/data/mysql/updatedatabase.pl b/installer/data/mysql/updatedatabase.pl
index fb347b5000..85be4c1b93 100755
--- a/installer/data/mysql/updatedatabase.pl
+++ b/installer/data/mysql/updatedatabase.pl
@@ -13219,7 +13219,7 @@ if ( CheckVersion($DBversion) ) {
             });
 
     $dbh->do(q{
-            UPDATE marc_subfield_structure SET authorised_value = NULL WHERE authorised_value = ';';
+            UPDATE marc_subfield_structure SET authorised_value = NULL WHERE authorised_value = '';
             });
 
     # If the DB has been created before 3.19.00.006, the default collate for marc_subfield_structure if not set to utf8_unicode_ci and the new FK will not be create (MariaDB or MySQL will raise err 150)