diff --git a/system/helpers/string_helper.php b/system/helpers/string_helper.php
index 0c47d44..4eee2a2 100644
--- a/system/helpers/string_helper.php
+++ b/system/helpers/string_helper.php
@@ -259,7 +259,7 @@
 	{
 		static $i;
 
-		if (func_num_args() == 0)
+		if (func_num_args() === 0)
 		{
 			$i = 0;
 			return '';