diff --git a/module/score/model.php b/module/score/model.php
index 05ab879987..894b9a98fe 100644
--- a/module/score/model.php
+++ b/module/score/model.php
@@ -129,7 +129,7 @@ class scoreModel extends model
             $rule['score'] = $rule['score'] + $extended['pri'][$task->pri];
         }
 
-        if(!empty($task->estimate))
+        if($task->estimate > 0)
         {
             $rule['score'] = $rule['score'] + ($task->consumed > 0 ? round($task->consumed / 10.0 * $task->estimate / $task->consumed) : 0);
         }