diff --git a/t/Serials/ModSerialStatus.t b/t/Serials/ModSerialStatus.t
index 2c1cd6be30..ba0041eb2b 100755
--- a/t/Serials/ModSerialStatus.t
+++ b/t/Serials/ModSerialStatus.t
@@ -23,7 +23,7 @@ use Modern::Perl;
 use Data::Dumper qw/Dumper/;
 
 use Test::NoWarnings;
-use Test::More tests => 9;
+use Test::More tests => 10;
 
 use C4::Serials;
 
@@ -33,6 +33,7 @@ is( C4::Serials::_handle_seqno( '2017 (No. 8)', $list ),           $list,
 is( C4::Serials::_handle_seqno( '2017 (No. 9)', $list ),           $list,                     'Not added 9' );
 is( C4::Serials::_handle_seqno( '2017 (No. 10)', $list ),          $list,                     'Not added 10' );
 is( C4::Serials::_handle_seqno( '2017 (No. 11)', $list ),          $list . '; 2017 (No. 11)', 'Added 11' );
+is( C4::Serials::_handle_seqno( '{1}', $list ),                    $list . '; {1}',           'Added {1}' );
 is( C4::Serials::_handle_seqno( '2017 (No. 7)', $list, 'REMOVE' ), $list,                     'Not removed 7' );
 is( C4::Serials::_handle_seqno( '2017 (No. 10)', $list, 'REMOVE' ) !~ /\(10\)/, 1,            'Removed 10' );
 is( C4::Serials::_handle_seqno( '2017 (No. 8)', $list, 'CHECK' ),               1,            'Found 8' );