diff --git a/CHANGELOG b/CHANGELOG
index 31357d5fd..be4f33d65 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -175,6 +175,7 @@ Version 1.1.13 December 30, 2012
 - Enh #1596: Added CGridView::rowHtmlOptionsExpression to allow set HTML attributes for the row (Ryadnov)
 - Enh #1657: CDbCommandBuilder::createUpdateCounterCommand now can be used with float values (samdark, hyzhakus)
 - Enh #1658: CFormatter::formatHtml() is now more flexible and customizable through new CFormatter::$htmlPurifierOptions property (resurtm)
+- Enh #2343: Added CRequiredValidator::$trim property which determines to trim attribute value or not (AnatolyRugalev)
 - Enh: Fixed the check for ajaxUpdate false value in jquery.yiilistview.js as that never happens (mdomba)
 - Enh: Requirements checker: added check for Oracle database (pdo_oci extension) and MSSQL (pdo_dblib, pdo_sqlsrv and pdo_mssql extensions) (resurtm)
 - Enh: Added CChainedLogFilter class to allow adding multiple filters to a logroute (cebe)
diff --git a/framework/validators/CRequiredValidator.php b/framework/validators/CRequiredValidator.php
index 21e0e18bd..4d0e42ffe 100644
--- a/framework/validators/CRequiredValidator.php
+++ b/framework/validators/CRequiredValidator.php
@@ -40,6 +40,13 @@ class CRequiredValidator extends CValidator
 	 * This property is only used when {@link requiredValue} is not null.
 	 */
 	public $strict=false;
+	/**
+	 * @var boolean whether it trims the value in comparing the string.
+	 * When this is false, the attribute value can contain spaces at the beginning or end
+	 * Defaults to true, meaning the value will be trimmed
+	 * @since 1.1.14
+	 */
+	public $trim=true;
 	/**
 	 * Validates the attribute of the object.
 	 * If there is any error, the error message is added to the object.
@@ -58,7 +65,7 @@ class CRequiredValidator extends CValidator
 				$this->addError($object,$attribute,$message);
 			}
 		}
-		elseif($this->isEmpty($value,true))
+		elseif($this->isEmpty($value,$this->trim))
 		{
 			$message=$this->message!==null?$this->message:Yii::t('yii','{attribute} cannot be blank.');
 			$this->addError($object,$attribute,$message);
@@ -97,8 +104,12 @@ if(value!=" . CJSON::encode($this->requiredValue) . ") {
 			$message=strtr($message, array(
 				'{attribute}'=>$object->getAttributeLabel($attribute),
 			));
+			if($this->trim)
+				$emptyCondition = "jQuery.trim(value)==''";
+			else
+				$emptyCondition = "value==''";
 			return "
-if(jQuery.trim(value)=='') {
+if({$emptyCondition}) {
 	messages.push(".CJSON::encode($message).");
 }
 ";
diff --git a/tests/framework/validators/CRequiredlValidatorTest.php b/tests/framework/validators/CRequiredlValidatorTest.php
new file mode 100644
index 000000000..58b91d5d3
--- /dev/null
+++ b/tests/framework/validators/CRequiredlValidatorTest.php
@@ -0,0 +1,29 @@
+<?php
+require_once('ValidatorTestModel.php');
+
+class CRequiredValidatorTest extends CTestCase
+{
+	public function testEmpty()
+	{
+		$model = new ValidatorTestModel('CRequiredValidatorTest');
+		$model->validate(array('username'));
+		$this->assertArrayHasKey('username', $model->getErrors());
+	}
+
+	public function testSpaces()
+	{
+		$model = new ValidatorTestModel('CRequiredValidatorTest');
+		$model->username = ' ';
+		$model->validate(array('username'));
+		$this->assertArrayNotHasKey('username', $model->getErrors());
+	}
+
+	public function testEmptyWithSpaces()
+	{
+		$model = new ValidatorTestModel('CRequiredValidatorTest');
+		$model->address = ' ';
+		$model->validate(array('address'));
+		$this->assertArrayHasKey('address', $model->getErrors());
+	}
+
+}
diff --git a/tests/framework/validators/ValidatorTestModel.php b/tests/framework/validators/ValidatorTestModel.php
index 59f40db43..c7604cd59 100644
--- a/tests/framework/validators/ValidatorTestModel.php
+++ b/tests/framework/validators/ValidatorTestModel.php
@@ -11,6 +11,9 @@ class ValidatorTestModel extends CFormModel
 
 	public $number;
 
+	public $username;
+	public $address;
+
 	public function rules()
 	{
 		return array(
@@ -26,6 +29,9 @@ class ValidatorTestModel extends CFormModel
 			array('url', 'url', 'allowEmpty'=>false, 'on'=>'CUrlValidatorTest'),
 
 			array('number', 'numerical', 'min'=>5, 'max'=>15, 'integerOnly'=>true, 'on'=>'CNumberValidatorTest'),
+
+			array('username', 'required', 'trim' => false, 'on' => 'CRequiredValidatorTest'),
+			array('address', 'required', 'on' => 'CRequiredValidatorTest'),
 		);
 	}
 }