diff --git a/tests/Monolog/Formatter/LineFormatterTest.php b/tests/Monolog/Formatter/LineFormatterTest.php
index 22f8472a..17ce8512 100644
--- a/tests/Monolog/Formatter/LineFormatterTest.php
+++ b/tests/Monolog/Formatter/LineFormatterTest.php
@@ -102,13 +102,9 @@ class LineFormatterTest extends \PHPUnit_Framework_TestCase
             'message' => 'foobar',
         ));
 
-        if (version_compare(PHP_VERSION, '5.4.0', '>=')) {
-            $path = json_encode(__FILE__, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
-        } else {
-            $path = json_encode(__FILE__);
-        }
+        $path = str_replace('\\/', '/', json_encode(__FILE__));
 
-        $this->assertEquals('['.date('Y-m-d').'] core.CRITICAL: foobar {"exception":"[object] (RuntimeException: Foo at '.substr($path, 1, -1).':'.(__LINE__-12).')"} []'."\n", $message);
+        $this->assertEquals('['.date('Y-m-d').'] core.CRITICAL: foobar {"exception":"[object] (RuntimeException: Foo at '.substr($path, 1, -1).':'.(__LINE__-8).')"} []'."\n", $message);
     }
 
     public function testBatchFormat()