diff --git a/installer/data/mysql/db_revs/240600056.pl b/installer/data/mysql/db_revs/240600056.pl
index 82b0413128..abe1915c4d 100755
--- a/installer/data/mysql/db_revs/240600056.pl
+++ b/installer/data/mysql/db_revs/240600056.pl
@@ -12,17 +12,15 @@ return {
             q{
             SELECT borrowernumber
             FROM borrowers
-            WHERE updated_on = '0000-00-00 00:00:00'
+            WHERE CAST(updated_on AS CHAR(19)) = '0000-00-00 00:00:00'
         }
         );
         $sth->execute;
         my $results = $sth->fetchall_arrayref( {} );
-
         if (@$results) {
             sanitize_zero_date( 'borrowers', 'updated_on' );
             say_info( $out, "The following borrowers' updated_on has been sanitized: "
                     . join( ', ', map { $_->{borrowernumber} } @$results ) );
         }
-
     },
 };