Removed closing PHP tags, replaced with a comment block identifying the end of the file
diff --git a/system/application/config/constants.php b/system/application/config/constants.php
index 3f79756..020baa2 100644
--- a/system/application/config/constants.php
+++ b/system/application/config/constants.php
@@ -36,4 +36,6 @@
define('FOPEN_WRITE_CREATE_STRICT', 'xb');
define('FOPEN_READ_WRITE_CREATE_STRICT', 'x+b');
-?>
\ No newline at end of file
+
+/* End of file constants.php */
+/* Location: ./system/application/config/constants.php */
\ No newline at end of file