diff --git a/installer/data/mysql/updatedatabase.pl b/installer/data/mysql/updatedatabase.pl
index 64905499ee..a6f6be6daf 100755
--- a/installer/data/mysql/updatedatabase.pl
+++ b/installer/data/mysql/updatedatabase.pl
@@ -3448,11 +3448,11 @@ if (C4::Context->preference("Version") < TransformToNum($DBversion)) {
     my $value = C4::Context->preference("XSLTResultsDisplay");
     $dbh->do(
         "INSERT INTO systempreferences (variable,value,type)
-         VALUES('OPACXSLTResultsDisplay',$value,'YesNo')");
+         VALUES('OPACXSLTResultsDisplay',?,'YesNo')", {}, $value ? 1 : 0);
     $value = C4::Context->preference("XSLTDetailsDisplay");
     $dbh->do(
         "INSERT INTO systempreferences (variable,value,type)
-         VALUES('OPACXSLTDetailsDisplay',$value,'YesNo')");
+         VALUES('OPACXSLTDetailsDisplay',?,'YesNo')", {}, $value ? 1 : 0);
     print "Upgrade done (added two new syspref: OPACXSLTResultsDisplay and OPACXSLTDetailDisplay). You may have to go in Admin > System preference to tweak XSLT related syspref both in OPAC and Search tabs.\n     ";
     SetVersion ($DBversion);
 }