diff --git a/forms/CustomRequiredFields.php b/forms/CustomRequiredFields.php
index 2d4c26dff..971565e5e 100755
--- a/forms/CustomRequiredFields.php
+++ b/forms/CustomRequiredFields.php
@@ -123,7 +123,7 @@ class CustomRequiredFields extends RequiredFields{
 					eval($fieldName['php']);
 				}else if($formField) {
 					// if an error is found, the form is returned.
-					if(!$data[$fieldName] || preg_match('/^\s*$/', $data[$fieldName])) {
+					if(!strlen($data[$fieldName]) || preg_match('/^\s*$/', $data[$fieldName])) {
 						$this->validationError(
 							$fieldName,
                                                         sprintf(_t('Form.FIELDISREQUIRED', "%s is required."),
diff --git a/forms/RequiredFields.php b/forms/RequiredFields.php
index 5e8149996..3d9b1b7aa 100755
--- a/forms/RequiredFields.php
+++ b/forms/RequiredFields.php
@@ -99,8 +99,8 @@ JS;
 		}
 		if($this->required) {
 			foreach($this->required as $fieldName) { 
-				$formField = $fields->dataFieldByName($fieldName); 
-				if($formField && !$data[$fieldName]) {
+				$formField = $fields->dataFieldByName($fieldName);
+				if($formField && !strlen($data[$fieldName])) {
 					$errorMessage = sprintf(_t('Form.FIELDISREQUIRED', '%s is required').'.', strip_tags('"' . ($formField->Title() ? $formField->Title() : $fieldName) . '"'));
 					if($msg = $formField->getCustomValidationMessage()) {
 						$errorMessage = $msg;
diff --git a/forms/Validator.php b/forms/Validator.php
index 9bcd66cd2..d7d1f605e 100755
--- a/forms/Validator.php
+++ b/forms/Validator.php
@@ -167,7 +167,7 @@ abstract class Validator extends Object {
 	}
 	
 	function requireField($fieldName, $data) {
-		if(!$data[$fieldName]) $this->validationError($fieldName, "$fieldName is required.", "required");
+		if(!strlen($data[$fieldName])) $this->validationError($fieldName, "$fieldName is required.", "required");
 	}
 	
 	function includeJavascriptValidation() {