Removed closing PHP tags, replaced with a comment block identifying the end of the file
diff --git a/system/helpers/security_helper.php b/system/helpers/security_helper.php
index edb6ebb..0dc1429 100644
--- a/system/helpers/security_helper.php
+++ b/system/helpers/security_helper.php
@@ -121,4 +121,6 @@
 	}

 }

 

-?>
\ No newline at end of file
+
+/* End of file security_helper.php */
+/* Location: ./system/helpers/security_helper.php */
\ No newline at end of file