diff --git a/app/src/main/java/jp/juggler/subwaytooter/api/entity/TootInstance.kt b/app/src/main/java/jp/juggler/subwaytooter/api/entity/TootInstance.kt
index 5dd8b4cf..a1f206de 100644
--- a/app/src/main/java/jp/juggler/subwaytooter/api/entity/TootInstance.kt
+++ b/app/src/main/java/jp/juggler/subwaytooter/api/entity/TootInstance.kt
@@ -15,14 +15,13 @@ class TootInstance(parser : TootParser, src : JSONObject) {
 		private val rePleroma = Pattern.compile("\\bpleroma\\b", Pattern.CASE_INSENSITIVE)
 		
 		val VERSION_1_6 = VersionString("1.6")
-		val VERSION_2_7_0_rc1 = VersionString("2.6.5") // FIXME: 2.7rcが出たら変更する
 		val VERSION_2_4_0_rc1 = VersionString("2.4.0rc1")
 		val VERSION_2_4_0_rc2 = VersionString("2.4.0rc2")
 		val VERSION_2_4_0 = VersionString("2.4.0")
 		val VERSION_2_4_1_rc1 = VersionString("2.4.1rc1")
 		val VERSION_2_4_1 = VersionString("2.4.1")
 		val VERSION_2_6_0 = VersionString("2.6.0")
-		
+		val VERSION_2_7_0_rc1 = VersionString("2.7.0rc1")
 	}
 	
 	// いつ取得したか(内部利用)
diff --git a/app/src/main/java/jp/juggler/subwaytooter/util/PostHelper.kt b/app/src/main/java/jp/juggler/subwaytooter/util/PostHelper.kt
index 8fc7343e..3e75ec0b 100644
--- a/app/src/main/java/jp/juggler/subwaytooter/util/PostHelper.kt
+++ b/app/src/main/java/jp/juggler/subwaytooter/util/PostHelper.kt
@@ -494,8 +494,8 @@ class PostHelper(
 						}
 						
 						if(scheduledAt != 0L) {
-							if(! instance.versionGE(TootInstance.VERSION_2_7_0_rc1)) {
-								return TootApiResult("Mastodon pre-2.7.0 has no scheduled status API")
+							if( ! instance.versionGE(TootInstance.VERSION_2_7_0_rc1) ) {
+								return TootApiResult(activity.getString(R.string.scheduled_status_requires_mastodon_2_7_0))
 							}
 							// UTCの日時を渡す
 							val c = GregorianCalendar.getInstance(TimeZone.getTimeZone("UTC"))
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index d21015e7..612b984b 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -844,5 +844,6 @@
     <string name="reply_icon_size">返信アイコンの大きさ(単位:dp。デフォルト:24。アプリ再起動が必要)</string>
     <string name="all">All</string>
     <string name="show_links_in_context_menu">本文中のリンクをコンテキストメニューに表示する</string>
+    <string name="scheduled_status_requires_mastodon_2_7_0">予約投稿はマストドン2.7.0以降で使えます</string>
 
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index b928d8f1..7a184486 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -865,5 +865,6 @@
     <string name="reply_icon_size">Reply icon size(Unit:dp. default:24. app restart required)</string>
     <string name="all">All</string>
     <string name="show_links_in_context_menu">Show links in context menu</string>
+    <string name="scheduled_status_requires_mastodon_2_7_0">Scheduled status requires Mastodon 2.7.0 or later.</string>
 
 </resources>
\ No newline at end of file