diff --git a/app/src/main/java/jp/juggler/subwaytooter/ActMain.kt b/app/src/main/java/jp/juggler/subwaytooter/ActMain.kt
index 07d21812..74d12ba7 100644
--- a/app/src/main/java/jp/juggler/subwaytooter/ActMain.kt
+++ b/app/src/main/java/jp/juggler/subwaytooter/ActMain.kt
@@ -35,10 +35,7 @@ import jp.juggler.subwaytooter.span.MyClickableSpan
 import jp.juggler.subwaytooter.span.MyClickableSpanClickCallback
 import jp.juggler.subwaytooter.table.AcctColor
 import jp.juggler.subwaytooter.table.SavedAccount
-import jp.juggler.subwaytooter.util.ChromeTabOpener
-import jp.juggler.subwaytooter.util.EmptyCallback
-import jp.juggler.subwaytooter.util.LinkHelper
-import jp.juggler.subwaytooter.util.PostHelper
+import jp.juggler.subwaytooter.util.*
 import jp.juggler.subwaytooter.view.*
 import jp.juggler.util.*
 import org.apache.commons.io.IOUtils
@@ -2005,6 +2002,7 @@ class ActMain : AppCompatActivity()
 					}
 					
 					// 通知の更新が必要かもしれない
+					PushSubscriptionHelper.clearLastCheck(sa)
 					PollingWorker.queueUpdateNotification(this@ActMain)
 					return true
 				}
diff --git a/app/src/main/java/jp/juggler/subwaytooter/util/PushSubscriptionHelper.kt b/app/src/main/java/jp/juggler/subwaytooter/util/PushSubscriptionHelper.kt
index 4278f708..5e2500d1 100644
--- a/app/src/main/java/jp/juggler/subwaytooter/util/PushSubscriptionHelper.kt
+++ b/app/src/main/java/jp/juggler/subwaytooter/util/PushSubscriptionHelper.kt
@@ -30,8 +30,14 @@ class PushSubscriptionHelper(
 			"Push subscription is not needed. we can't do check current subscription state, and unsubscribe it."
 		const val ERROR_PREVENT_FREQUENTLY_CHECK = "prevent frequently subscription check."
 		
+		fun clearLastCheck(account : SavedAccount){
+			synchronized(lastCheckedMap){
+				lastCheckedMap.remove(account.acct)
+			}
+		}
 	}
 	
+	
 	private fun preventRapid() : Boolean {
 		if(verbose) return true
 		val now = System.currentTimeMillis()