diff --git a/samples/src/main/kotlin/jp/shiguredo/sora/sample/screencast/SoraScreencastService.kt b/samples/src/main/kotlin/jp/shiguredo/sora/sample/screencast/SoraScreencastService.kt
index 9c1c391..131624c 100644
--- a/samples/src/main/kotlin/jp/shiguredo/sora/sample/screencast/SoraScreencastService.kt
+++ b/samples/src/main/kotlin/jp/shiguredo/sora/sample/screencast/SoraScreencastService.kt
@@ -204,6 +204,7 @@ class SoraScreencastService : Service() {
     private fun sendInvalidateBroadcast() {
         // MainActivity に画面更新を促す Intent を送る
         val intent = Intent("ACTION_INVALIDATE_VIEW")
+        intent.setPackage(applicationContext.packageName)
         sendBroadcast(intent)
     }