diff --git a/system/helpers/security_helper.php b/system/helpers/security_helper.php
index 3e6e914..7fcb184 100644
--- a/system/helpers/security_helper.php
+++ b/system/helpers/security_helper.php
@@ -123,7 +123,7 @@
 	 */
 	function encode_php_tags($str)
 	{
-		return str_replace(array('<?php', '<?PHP', '<?', '?>'),  array('&lt;?php', '&lt;?PHP', '&lt;?', '?&gt;'), $str);
+		return str_replace(array('<?', '?>'),  array('&lt;?', '?&gt;'), $str);
 	}
 }
 
diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
index 6d4446d..fb1c69c 100644
--- a/system/libraries/Form_validation.php
+++ b/system/libraries/Form_validation.php
@@ -1382,7 +1382,7 @@
 	 */
 	public function encode_php_tags($str)
 	{
-		return str_replace(array('<?php', '<?PHP', '<?', '?>'),  array('&lt;?php', '&lt;?PHP', '&lt;?', '?&gt;'), $str);
+		return str_replace(array('<?', '?>'),  array('&lt;?', '?&gt;'), $str);
 	}
 
 	// --------------------------------------------------------------------