diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
index fd0c22e..b658011 100644
--- a/system/libraries/Form_validation.php
+++ b/system/libraries/Form_validation.php
@@ -319,7 +319,7 @@
 			}
 			else
 			{
-				if (isset($_POST[$field]))
+				if (isset($_POST[$field]) AND $_POST[$field] != "")
 				{
 					$this->_field_data[$field]['postdata'] = $_POST[$field];
 				}