diff --git a/t/99dbic_sqlt_parser.t b/t/99dbic_sqlt_parser.t
index 2ab43a33e..f2ac4ca72 100644
--- a/t/99dbic_sqlt_parser.t
+++ b/t/99dbic_sqlt_parser.t
@@ -125,6 +125,15 @@ my $idx_exceptions = {
         my $idx_test = join("\x00", $index->fields);
         isnt ( $pk_test, $idx_test, "no additional index for the primary columns exists in $source_name");
     }
+
+    my $deferrables = grep {
+            $_->name eq 'track_cd_position'
+        and $_->type eq 'UNIQUE'
+        and $_->deferrable == 1
+      }
+      get_table($sqlt_schema, $schema, 'Track')->get_constraints;
+
+    is ($deferrables, 1, "a deferrable unique constraint called track_cd_position exists on Track");
   }
 }
 
diff --git a/t/lib/DBICTest/Schema/Track.pm b/t/lib/DBICTest/Schema/Track.pm
index ef3b14de4..2787a7e9c 100644
--- a/t/lib/DBICTest/Schema/Track.pm
+++ b/t/lib/DBICTest/Schema/Track.pm
@@ -44,7 +44,10 @@ __PACKAGE__->add_columns(
 );
 __PACKAGE__->set_primary_key('trackid');
 
-__PACKAGE__->add_unique_constraint([ qw/cd position/ ]);
+__PACKAGE__->add_unique_constraint({
+        columns => [ qw/cd position/ ],
+        sqlt_extra => { deferrable => 1 }
+});
 __PACKAGE__->add_unique_constraint([ qw/cd title/ ]);
 
 __PACKAGE__->position_column ('position');