diff --git a/system/libraries/Validation.php b/system/libraries/Validation.php
index c828328..cae1a3f 100644
--- a/system/libraries/Validation.php
+++ b/system/libraries/Validation.php
@@ -640,7 +640,17 @@
 	 */
 	function is_natural_no_zero($str)
 	{   
-   		return (bool)preg_match( '/^[1-9]+$/', $str);
+    	if ( ! preg_match( '/^[0-9]+$/', $str))
+    	{
+    		return FALSE;
+    	}
+    	
+    	if ($str == 0)
+    	{
+    		return FALSE;
+    	}
+    
+   		return TRUE;
 	}
 
 	// --------------------------------------------------------------------