diff --git a/system/libraries/Validation.php b/system/libraries/Validation.php
index 79ab76c..9600534 100644
--- a/system/libraries/Validation.php
+++ b/system/libraries/Validation.php
@@ -504,7 +504,7 @@
 	 */		
 	function alpha($str)
 	{
-		return ( ! preg_match("/^([-a-z])+$/i", $str)) ? FALSE : TRUE;
+		return ( ! preg_match("/^([a-z])+$/i", $str)) ? FALSE : TRUE;
 	}
 	
 	// --------------------------------------------------------------------