diff --git a/src/MusicCombine.php b/src/MusicCombine.php
index bdaf7a7..bf73e76 100644
--- a/src/MusicCombine.php
+++ b/src/MusicCombine.php
@@ -127,7 +127,7 @@ public function combine($json_data)
             else
                 throw new Exception('File not generated');
         } else {
-            throw new Exception('Error appending music file: ' . $music_result);
+            throw new Exception('Error appending music file: ' . $script);
         }
     }