diff --git a/src/Symfony/Component/Process/Tests/SigchildDisabledProcessTest.php b/src/Symfony/Component/Process/Tests/SigchildDisabledProcessTest.php
index 8580649b29..798e66a571 100644
--- a/src/Symfony/Component/Process/Tests/SigchildDisabledProcessTest.php
+++ b/src/Symfony/Component/Process/Tests/SigchildDisabledProcessTest.php
@@ -133,6 +133,15 @@ class SigchildDisabledProcessTest extends AbstractProcessTest
         $process->getExitCodeText();
     }
 
+    /**
+     * @expectedException \Symfony\Component\Process\Exception\RuntimeException
+     * @expectedExceptionMessage This PHP has been compiled with --enable-sigchild. You must use setEnhanceSigchildCompatibility() to use this method.
+     */
+    public function testExitCodeTextIsNullWhenExitCodeIsNull()
+    {
+        parent::testExitCodeTextIsNullWhenExitCodeIsNull();
+    }
+
     /**
      * @expectedException \Symfony\Component\Process\Exception\RuntimeException
      * @expectedExceptionMessage This PHP has been compiled with --enable-sigchild. You must use setEnhanceSigchildCompatibility() to use this method.