diff --git a/Changes b/Changes
index f025c802..ec68ab47 100644
--- a/Changes
+++ b/Changes
@@ -4,6 +4,7 @@
 
   * #740 more robust log rotation
   * #762 wide character error on deploy with local oui.txt
+  * error when using API /api/v1/object/device/ip/port_vlans
 
 2.047002 - 2020-12-30
 
diff --git a/lib/App/Netdisco/DB/Result.pm b/lib/App/Netdisco/DB/Result.pm
index 042e9fb9..19ae76be 100644
--- a/lib/App/Netdisco/DB/Result.pm
+++ b/lib/App/Netdisco/DB/Result.pm
@@ -5,7 +5,21 @@ use warnings;
 
 use base 'DBIx::Class::Core';
 
-__PACKAGE__->load_components(qw{Helper::Row::ToJSON});
+BEGIN {
+  no warnings 'redefine';
+  __PACKAGE__->load_components(qw{Helper::Row::ToJSON});
+
+  # this replacement will avoid the issue of relation names which override
+  # field names, causing TO_JSON to return object instances, breaking to_json
+  *DBIx::Class::Helper::Row::ToJSON::TO_JSON = sub {
+      my $self = shift;
+      my $columns_info = $self->columns_info($self->serializable_columns);
+      my $columns_data = { $self->get_columns };
+      return {
+         map +($_ => $columns_data->{$_}), keys %$columns_info
+      };
+  };
+}
 
 # for DBIx::Class::Helper::Row::ToJSON
 # to allow text columns to be included in results