diff --git a/Localization/Money.php b/Localization/Money.php
index 34b1878af..59bddc09c 100644
--- a/Localization/Money.php
+++ b/Localization/Money.php
@@ -318,13 +318,13 @@ class Money implements \Serializable
     /**
      * Searialze.
      *
-     * @return int
+     * @return string
      *
      * @since  1.0.0
      */
     public function serialize() : string
     {
-        return $this->getInt();
+        return (string) $this->getInt();
     }
 
     /**
@@ -338,7 +338,7 @@ class Money implements \Serializable
      */
     public function unserialize($value) : void
     {
-        $this->setInt($value);
+        $this->setInt((int) $value);
     }
 
     /**
diff --git a/tests/Message/Http/RequestTest.php b/tests/Message/Http/RequestTest.php
index 73535b70d..adbdfae4f 100644
--- a/tests/Message/Http/RequestTest.php
+++ b/tests/Message/Http/RequestTest.php
@@ -122,15 +122,6 @@ class RequestTest extends \PHPUnit\Framework\TestCase
         );
     }
 
-    /**
-     * @expectedException \phpOMS\Stdlib\Base\Exception\InvalidEnumValue
-     */
-    public function testInvalidRequestSource()
-    {
-        $request = new Request(new Http('http://www.google.com/test/path'));
-        $request->setRequestSource(999);
-    }
-
     /**
      * @expectedException \OutOfRangeException
      */