diff --git a/installer/data/mysql/en/mandatory/sysprefs.sql b/installer/data/mysql/en/mandatory/sysprefs.sql
index e3977a8088..8b90a24bff 100755
--- a/installer/data/mysql/en/mandatory/sysprefs.sql
+++ b/installer/data/mysql/en/mandatory/sysprefs.sql
@@ -309,4 +309,4 @@ INSERT INTO `systempreferences` (variable,value,explanation,options,type) VALUES
 INSERT INTO `systempreferences` (variable,value,explanation,options,type) VALUES('Display856uAsImage','OFF','Display the URI in the 856u field as an image, the corresponding Staff Client XSLT option must be on','OFF|Details|Results|Both','Choice');
 INSERT INTO `systempreferences` (variable,value,explanation,options,type) VALUES('AlternateHoldingsField','','The MARC field/subfield that contains alternate holdings information for bibs taht do not have items attached (e.g. 852abchi for libraries converting from MARC Magician).',NULL,'free');
 INSERT INTO `systempreferences` (variable,value,explanation,options,type) VALUES('AlternateHoldingsSeparator','','The string to use to separate subfields in alternate holdings displays.',NULL,'free');
-
+INSERT INTO `systempreferences` (variable,value,explanation,options,type) VALUES('OpacHiddenItems','','This syspref allows to define custom rules for hiding specific items at opac. See docs/opac/OpacHiddenItems.txt for more informations.','','Textarea');
diff --git a/installer/data/mysql/fr-FR/1-Obligatoire/unimarc_standard_systemprefs.sql b/installer/data/mysql/fr-FR/1-Obligatoire/unimarc_standard_systemprefs.sql
index c1a8f6dda8..552bf80d84 100755
--- a/installer/data/mysql/fr-FR/1-Obligatoire/unimarc_standard_systemprefs.sql
+++ b/installer/data/mysql/fr-FR/1-Obligatoire/unimarc_standard_systemprefs.sql
@@ -311,4 +311,5 @@ INSERT INTO `systempreferences` (variable,value,explanation,options,type) VALUES
 INSERT INTO `systempreferences` (variable,value,explanation,options,type) VALUES('UseControlNumber',0,'If ON, record control number (w subfields) and control number (001) are used for linking of bibliographic records.','','YesNo');
 INSERT INTO `systempreferences` (variable,value,explanation,options,type) VALUES('AlternateHoldingsField','','The MARC field/subfield that contains alternate holdings information for bibs taht do not have items attached (e.g. 852abchi for libraries converting from MARC Magician).',NULL,'free');
 INSERT INTO `systempreferences` (variable,value,explanation,options,type) VALUES('AlternateHoldingsSeparator','','The string to use to separate subfields in alternate holdings displays.',NULL,'free');
+INSERT INTO `systempreferences` (variable,value,explanation,options,type) VALUES('OpacHiddenItems','','This syspref allows to define custom rules for hiding specific items at opac. See docs/opac/OpacHiddenItems.txt for more informations.','','Textarea');