diff --git a/composer.json b/composer.json
index 11b6c90a..b7753c14 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,7 @@
         "pda/pheanstalk": "~3.0",
         "league/container": "~1.0",
         "php-amqplib/php-amqplib": "~2.5",
-        "phpspec/phpspec": "~2.0",
+        "phpspec/phpspec": "^2.4",
         "phpunit/phpunit": "^4.8"
     },
     "suggest": {
diff --git a/spec/Bernard/Router/ClassNameRouterSpec.php b/spec/Bernard/Router/ClassNameRouterSpec.php
new file mode 100644
index 00000000..298700ee
--- /dev/null
+++ b/spec/Bernard/Router/ClassNameRouterSpec.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace spec\Bernard\Router;
+
+use Bernard\Envelope;
+use PhpSpec\ObjectBehavior;
+
+class ClassNameRouterSpec extends ObjectBehavior
+{
+    function let()
+    {
+        $this->beConstructedWith([
+            'Bernard\\Message' => function() {},
+        ]);
+    }
+
+    function it_is_initializable()
+    {
+        $this->shouldHaveType('Bernard\\Router\\ClassNameRouter');
+    }
+
+    function it_is_a_router()
+    {
+        $this->shouldImplement('Bernard\\Router');
+    }
+
+    function it_maps_an_envelope(Envelope $envelope)
+    {
+        $envelope->getClass()->willReturn('Bernard\\Message\\DefaultMessage');
+
+        $this->map($envelope)->shouldBeCallable();
+    }
+
+    function it_throws_an_exception_when_envelope_cannot_be_mapped(Envelope $envelope)
+    {
+        $envelope->getClass()->willReturn('Bernard\\Producer');
+
+        $this->shouldThrow('Bernard\\Exception\\ReceiverNotFoundException')->duringMap($envelope);
+    }
+}
diff --git a/src/Router/ClassNameRouter.php b/src/Router/ClassNameRouter.php
new file mode 100644
index 00000000..c2480fa7
--- /dev/null
+++ b/src/Router/ClassNameRouter.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace Bernard\Router;
+
+use Bernard\Envelope;
+use Bernard\Exception\ReceiverNotFoundException;
+
+/**
+ * @package Bernard
+ */
+class ClassNameRouter extends SimpleRouter
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function map(Envelope $envelope)
+    {
+        $receiver = $this->get($envelope->getClass());
+
+        if (!is_callable($receiver)) {
+            throw new ReceiverNotFoundException(sprintf('No receiver found for class "%s".', $envelope->getClass()));
+        }
+
+        return $receiver;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function get($name)
+    {
+        foreach ($this->receivers as $key => $receiver) {
+            if (is_a($name, $key, true)) {
+                return $receiver;
+            }
+        }
+
+        return null;
+    }
+}