diff --git a/lib/Tests/Fhp/ConnectionTest.php b/lib/Tests/Fhp/ConnectionTest.php
index 3eb5391..a93d18a 100644
--- a/lib/Tests/Fhp/ConnectionTest.php
+++ b/lib/Tests/Fhp/ConnectionTest.php
@@ -16,12 +16,12 @@ class ConnectionTest extends \PHPUnit_Framework_TestCase
 
     public function setUp()
     {
-        $this->adapter = $this->getMockBuilder(Curl::class)
+        $this->adapter = $this->getMockBuilder('\Fhp\Adapter\Curl')
             ->disableOriginalConstructor()
             ->setMethods(['send'])
             ->getMock();
 
-        $this->message = $this->getMockBuilder(Message::class)
+        $this->message = $this->getMockBuilder('\Fhp\Message\Message')
             ->disableOriginalConstructor()
             ->getMock();
     }
diff --git a/lib/Tests/Fhp/Message/MessageTest.php b/lib/Tests/Fhp/Message/MessageTest.php
index f956239..838bb5c 100644
--- a/lib/Tests/Fhp/Message/MessageTest.php
+++ b/lib/Tests/Fhp/Message/MessageTest.php
@@ -87,7 +87,7 @@ public function test_get_encrypted_segments()
         $this->assertInternalType('array', $segments);
 
         foreach ($segments as $segment) {
-            $this->assertInstanceOf(AbstractSegment::class, $segment);
+            $this->assertInstanceOf('\Fhp\Segment\AbstractSegment', $segment);
         }
     }
 }
\ No newline at end of file