diff --git a/module/task/model.php b/module/task/model.php
index 23b614e688..9c4f411ebd 100644
--- a/module/task/model.php
+++ b/module/task/model.php
@@ -1266,7 +1266,7 @@ class taskModel extends model
                 $task->{$extendField->field} = htmlSpecialString($task->{$extendField->field});
             }
 
-            if(isset($data->consumeds[$taskID]))
+            if(!empty($data->consumeds[$taskID]))
             {
                 if($data->consumeds[$taskID] < 0)
                 {