diff --git a/t/00011-build-model.t b/t/00011-build-model.t
index 1a63d14..bb955fa 100644
--- a/t/00011-build-model.t
+++ b/t/00011-build-model.t
@@ -4,8 +4,21 @@ use v5.30.0;
 use strict;
 use warnings;
 
-use Test::Most tests => 1;
+use Test::Most tests => 2;
+
+use Peace::Test::Mock::Model::Release;
 
 BEGIN {
     use_ok('Peace::Model::Build');
 }
+
+{
+    ## GIVEN
+    my $release = Peace::Test::Mock::Model::Release->new;
+    my $arch    = 'x86';
+    my $build   = Peace::Model::Build->new(
+        release => $release,
+        arch    => $arch,
+    );
+    ok $build->isa('Peace::Model::Build'), 'Build is made of Peace::Model::Build.';
+}