diff --git a/C4/Serials.pm b/C4/Serials.pm
index 79a3a70dbd..3298b06cd9 100644
--- a/C4/Serials.pm
+++ b/C4/Serials.pm
@@ -2023,7 +2023,7 @@ sub addroutingmember {
 
     my $rank;
     my $dbh = C4::Context->dbh;
-    my $sth = $dbh->prepare( "SELECT max(ranking) rank FROM subscriptionroutinglist WHERE subscriptionid = ?" );
+    my $sth = $dbh->prepare( "SELECT max(ranking) `rank` FROM subscriptionroutinglist WHERE subscriptionid = ?" );
     $sth->execute($subscriptionid);
     while ( my $line = $sth->fetchrow_hashref ) {
         if ( defined $line->{rank} && $line->{rank} > 0 ) {