diff --git a/tests/FastExcelWriterTest.php b/tests/FastExcelWriterTest.php
index 317690d..5ed8315 100644
--- a/tests/FastExcelWriterTest.php
+++ b/tests/FastExcelWriterTest.php
@@ -563,7 +563,7 @@ public function testExcelWriter4()
         $this->assertEquals('21', $style['font-size']);
         $this->assertEquals('Century', $style['font-name']);
 
-        //unlink($testFileName);
+        unlink($testFileName);
     }
 
     public function testExcelWriter5()