diff --git a/popcorn/Assets/MyGame/Scenes/Cooking/Scripts/CornManager.cs b/popcorn/Assets/MyGame/Scenes/Cooking/Scripts/CornManager.cs
index de534a15..cb88c7e7 100644
--- a/popcorn/Assets/MyGame/Scenes/Cooking/Scripts/CornManager.cs
+++ b/popcorn/Assets/MyGame/Scenes/Cooking/Scripts/CornManager.cs
@@ -62,7 +62,7 @@ public class CornManager : MonoBehaviour
             cornArray[i] = corn;
             corn.SetCornProperty(baseCornPopTime, cornBurntDuration);
             
-            cornGrowSpeed.Where(_ => !isCompleted).Subscribe(x =>
+            cornGrowSpeed.TakeWhile(_ => !isCompleted).Subscribe(x =>
             {
                 // コーンが弾けた後はRedの場合のみ焦げ進行する
                 if (corn.Condition.Value == CornCondition.Simple && !isHot)
@@ -93,8 +93,8 @@ public class CornManager : MonoBehaviour
             .FirstOrDefault(x => !x.Contains(CornCondition.Seed))
             .Subscribe(x =>
             {
-                isCompleted = true;
                 cornGrowSpeed.Value = 0f;
+                isCompleted = true;
                 if (x.Count(c => c == CornCondition.Simple) == x.Count) // すべてのコーンがPopped
                 {
                     result.SetValueAndForceNotify(CornResult.Perfect);