diff --git a/webapp/controller/HashRateController.class.php b/webapp/controller/HashRateController.class.php
index efcc7eeb..4d58df40 100644
--- a/webapp/controller/HashRateController.class.php
+++ b/webapp/controller/HashRateController.class.php
@@ -93,15 +93,28 @@ class HashRateController extends BaseAuthedController
             $this->_rspErr(1, 'task_id  error');
             return;
         }
-        $taskList = $this->hashRateService->getHashRateTasks($taskMeta['task_type']);
-        $taskDto = null;
-        foreach ($taskList as $task){
-            if ($task['task_id'] == $taskId){
-                $taskDb = HashRate::find($taskMeta['id'],$currentPeriod['id']);
-                $taskDto = $this->hashRateService->hashRateTaskDto($task,$taskDb,$currentPeriod['id']);
+
+        if ($taskMeta['task_type'] == \mt\AchievementsPower::TYPE5){
+            $task = array(
+                'task_id' => $taskMeta['id'],
+                'current' => 0,
+            );
+        }else{
+            $taskList = $this->hashRateService->getHashRateTasks($taskMeta['task_type']);
+            foreach ($taskList as $value){
+                if ($value['task_id'] == $taskId){
+                    $task = $value;
+                }
             }
         }
 
+        if (!isset($task)){
+            $this->_rspErr(10, 'server internal error');
+            return;
+        }
+        $taskDb = HashRate::find($taskMeta['id'],$currentPeriod['id']);
+        $taskDto = $this->hashRateService->hashRateTaskDto($task,$taskDb,$currentPeriod['id']);
+
         if (!$taskDto) {
             $this->_rspErr(10, 'server internal error');
             return;