diff --git a/.mailmap b/.mailmap
index 22615b331..ee01f0a68 100644
--- a/.mailmap
+++ b/.mailmap
@@ -29,6 +29,7 @@ Gerda Shank <gshank@cpan.org>               <gerda.shank@gmail.com>
 Gianni Ceccarelli <dakkar@thenautilus.net>  <gianni.ceccarelli@net-a-porter.com>
 Gordon Irving <goraxe@cpan.org>             <goraxe@goraxe.me.uk>
 Hakim Cassimally <osfameron@cpan.org>       <hakim@vm-participo.(none)>
+Henry Van Styn <vanstyn@cpan.org>           <vanstyn@intellitree.com>
 Jason M. Mills <jmmills@cpan.org>           <jmmills@cpan.org>
 Jonathan Chu <milki@rescomp.berkeley.edu>   <milki@rescomp.berkeley.edu>
 Jose Luis Martinez <jlmartinez@capside.com> <jlmartinez@capside.com>
diff --git a/AUTHORS b/AUTHORS
index 180d48543..61664fa01 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -199,6 +199,7 @@ triode: Pete Gamache <gamache@cpan.org>
 typester: Daisuke Murase <typester@cpan.org>
 uree: Oriol Soriano <oriol.soriano@capside.com>
 uwe: Uwe Voelker <uwe@uwevoelker.de>
+vanstyn: Henry Van Styn <vanstyn@cpan.org>
 victori: Victor Igumnov <victori@cpan.org>
 wdh: Will Hawes <wdhawes@gmail.com>
 wesm: Wes Malone <wes@mitsi.com>
diff --git a/t/91merge_joinpref_attr.t b/t/91merge_joinpref_attr.t
index 0e9f601ca..a7f9b971f 100644
--- a/t/91merge_joinpref_attr.t
+++ b/t/91merge_joinpref_attr.t
@@ -6,7 +6,7 @@ use lib qw(t/lib);
 use DBICTest;
 use Test::More;
 
-plan tests => 15;
+plan tests => 17;
 
 my $schema = DBICTest->init_schema();
 my $rs = $schema->resultset( 'CD' );
@@ -131,5 +131,20 @@ my $rs = $schema->resultset( 'CD' );
   is_deeply( $result, $expected );
 }
 
+{
+  my $a = [ { 'artist' => { 'manager' => {} } }, 'cd' ];
+  my $b = [ 'artist', { 'artist' => { 'manager' => {} } } ];
+  my $expected = [ { 'artist' => { 'manager' => {} } }, 'cd', { 'artist' => { 'manager' => {} } } ];
+  my $result = $rs->_merge_joinpref_attr($a, $b);
+  is_deeply( $result, $expected );
+}
+
+{
+  my $a = [ { 'artist' => { 'manager' => undef } }, 'cd' ];
+  my $b = [ 'artist', { 'artist' => { 'manager' => undef } } ];
+  my $expected = [ { 'artist' => { 'manager' => undef } }, 'cd', { 'artist' => { 'manager' => undef } } ];
+  my $result = $rs->_merge_joinpref_attr($a, $b);
+  is_deeply( $result, $expected );
+}
 
 1;