diff --git a/Koha.pm b/Koha.pm
index 07c8fbcd61..bf17acd3c1 100644
--- a/Koha.pm
+++ b/Koha.pm
@@ -29,7 +29,7 @@ use vars qw{ $VERSION };
 # - #4 : the developer version. The 4th number is the database subversion.
 #        used by developers when the database changes. updatedatabase take care of the changes itself
 #        and is automatically called by Auth.pm when needed.
-$VERSION = "16.11.03.000";
+$VERSION = "16.11.03.001";
 
 sub version {
     return $VERSION;
diff --git a/installer/data/mysql/updatedatabase.pl b/installer/data/mysql/updatedatabase.pl
index 6eb3b54f17..025bec6df7 100755
--- a/installer/data/mysql/updatedatabase.pl
+++ b/installer/data/mysql/updatedatabase.pl
@@ -13768,6 +13768,13 @@ if ( CheckVersion($DBversion) ) {
     SetVersion($DBversion);
 }
 
+$DBversion = '16.11.03.001';
+if( CheckVersion( $DBversion ) ) {
+    $dbh->do( "INSERT IGNORE INTO systempreferences (variable,value,options,explanation,type) VALUES('AuthorityMergeMode','loose','loose|strict','Authority merge mode','Choice')");
+    print "Upgrade to $DBversion done (Bug 17913 - Add system preference AuthorityMergeMode)\n";
+    SetVersion( $DBversion );
+}
+
 # DEVELOPER PROCESS, search for anything to execute in the db_update directory
 # SEE bug 13068
 # if there is anything in the atomicupdate, read and execute it.