diff --git a/helper/colona.v1.format.php b/helper/colona.v1.format.php
index ded88af..da4c12e 100644
--- a/helper/colona.v1.format.php
+++ b/helper/colona.v1.format.php
@@ -2,11 +2,13 @@
 // Go Namhyeon <gnh1201@gmail.com>
 // 2019-09-25
 
-loadHelper("string.utils");
-
 if(!check_function_exists("decode_colona_format") {
     function decode_colona_format($data) {
-        $lines = split_by_line(remove_utf8_bom($data));
+        if(loadHelper("string.utils")) {
+            $lines = split_by_line(remove_utf8_bom($data));
+        } else {
+            return false;
+        }
 
         $jobargs = array();
         $eof = false;