diff --git a/installer/data/mysql/atomicupdate/bug_23151.perl b/installer/data/mysql/atomicupdate/bug_23151.perl
deleted file mode 100644
index f32bef2973..0000000000
--- a/installer/data/mysql/atomicupdate/bug_23151.perl
+++ /dev/null
@@ -1,8 +0,0 @@
-$DBversion = 'XXX';
-if ( CheckVersion( $DBversion ) ) {
-    unless ( column_exists( 'borrower_modifications', 'changed_fields' ) ) {
-        $dbh->do("ALTER TABLE borrower_modifications ADD changed_fields MEDIUMTEXT AFTER verification_token;");
-    }
-    SetVersion( $DBversion );
-    print "Upgrade to $DBversion done (Bug 23151 - Add borrower_modifications.changed_fields column)\n";
-}