diff --git a/test/Twig/Tests/LexerTest.php b/test/Twig/Tests/LexerTest.php
index a5ed8fde3..ab104f4b0 100644
--- a/test/Twig/Tests/LexerTest.php
+++ b/test/Twig/Tests/LexerTest.php
@@ -151,7 +151,7 @@ class Twig_Tests_LexerTest extends PHPUnit_Framework_TestCase
         $stream = $lexer->tokenize($template);
         $node = $stream->next();
         $node = $stream->next();
-        $this->assertEquals(922337203685477580700, $node->getValue());
+        $this->assertEquals("922337203685477580700", $node->getValue());
     }
 
     public function testStringWithEscapedDelimiter()