diff --git a/framework/validators/CFileValidator.php b/framework/validators/CFileValidator.php
index acbe6dfb7..6fc73a6ca 100644
--- a/framework/validators/CFileValidator.php
+++ b/framework/validators/CFileValidator.php
@@ -183,7 +183,7 @@ class CFileValidator extends CValidator
 	 */
 	protected function validateFile($object, $attribute, $file)
 	{
-		$error=(null!==$file ? null : $file->getError());
+		$error=(null===$file ? null : $file->getError());
 		if($error==UPLOAD_ERR_INI_SIZE || $error==UPLOAD_ERR_FORM_SIZE || $this->maxSize!==null && $file->getSize()>$this->maxSize)
 		{
 			$message=$this->tooLarge!==null?$this->tooLarge : Yii::t('yii','The file "{file}" is too large. Its size cannot exceed {limit} bytes.');
diff --git a/tests/framework/validators/CFileValidatorTest.php b/tests/framework/validators/CFileValidatorTest.php
index 518761899..af650d423 100644
--- a/tests/framework/validators/CFileValidatorTest.php
+++ b/tests/framework/validators/CFileValidatorTest.php
@@ -39,10 +39,16 @@ class CFileValidatorTest extends CTestCase
 	public function testValidate()
 	{
 		$model = new ValidatorTestModel(__CLASS__);
-
 		$uploadedFile = new CUploadedFile('test.txt', __FILE__, 'text/plain', 40, UPLOAD_ERR_OK);
 		$model->uploaded_file = $uploadedFile;
-
 		$this->assertTrue($model->validate(), 'Valid file validation failed!');
 	}
+
+	public function testValidateNoFile()
+	{
+		$model = new ValidatorTestModel(__CLASS__);
+		$uploadedFile = new CUploadedFile('test.txt', __FILE__, 'text/plain', 40, UPLOAD_ERR_NO_FILE);
+		$model->uploaded_file = $uploadedFile;
+		$this->assertFalse($model->validate(), 'File with error passed validation!');
+	}
 }