diff --git a/lib/Raven/Client.php b/lib/Raven/Client.php
index 346cfdc6c..85492a57e 100644
--- a/lib/Raven/Client.php
+++ b/lib/Raven/Client.php
@@ -925,6 +925,9 @@ public function sanitize(&$data)
         if (!empty($data['contexts'])) {
             $data['contexts'] = $this->serializer->serialize($data['contexts'], 5);
         }
+        if (!empty($data['breadcrumbs'])) {
+            $data['breadcrumbs'] = $this->serializer->serialize($data['breadcrumbs'], 5);
+        }
     }
 
     /**
diff --git a/test/Raven/Tests/ClientTest.php b/test/Raven/Tests/ClientTest.php
index 112dee5c3..82eb49d28 100644
--- a/test/Raven/Tests/ClientTest.php
+++ b/test/Raven/Tests/ClientTest.php
@@ -1281,6 +1281,36 @@ public function testSanitizeContexts()
         )), $data);
     }
 
+    /**
+     * @covers Raven_Client::sanitize
+     */
+    public function testSanitizeBreadcrumbs()
+    {
+        $client = new Dummy_Raven_Client();
+        $data = array('breadcrumbs' => array(array(
+            'message' => 'foo',
+            'utf8' => pack("NA3CC", 3, "aBc", 0x0D, 0x0A),
+            'data' => array(
+                'line' => 1216,
+                'bindings' => array(
+                    array('foo', pack("NA3CC", 3, "aBc", 0x0D, 0x0A)),
+                )
+            ),
+        )));
+        $client->sanitize($data);
+
+        $this->assertEquals(array('breadcrumbs' => array(array(
+            'message' => 'foo',
+            'utf8' => mb_convert_encoding(pack("NA3CC", 3, "aBc", 0x0D, 0x0A), 'UTF-8'),
+            'data' => array(
+                'line' => 1216,
+                'bindings' => array(
+                    array('foo', mb_convert_encoding(pack("NA3CC", 3, "aBc", 0x0D, 0x0A), 'UTF-8')),
+                )
+            ),
+        ))), $data);
+    }
+
     /**
      * @covers Raven_Client::buildCurlCommand
      */