diff --git a/Tests/PHP/CodeCoverage/Report/FactoryTest.php b/Tests/PHP/CodeCoverage/Report/FactoryTest.php
index 7d7568bb6..bdbc6ef6e 100644
--- a/Tests/PHP/CodeCoverage/Report/FactoryTest.php
+++ b/Tests/PHP/CodeCoverage/Report/FactoryTest.php
@@ -80,7 +80,7 @@ public function testSomething()
     {
         $root = $this->getCoverageForBankAccount()->getReport();
 
-        $expectedPath = rtrim(TEST_FILES_PATH, '/');
+        $expectedPath = rtrim(TEST_FILES_PATH, DIRECTORY_SEPARATOR);
         $this->assertEquals($expectedPath, $root->getName());
         $this->assertEquals($expectedPath, $root->getPath());
         $this->assertEquals(10, $root->getNumExecutableLines());