diff --git a/src/com/android/server/telecom/RespondViaSmsManager.java b/src/com/android/server/telecom/RespondViaSmsManager.java
index 00d94f0..23ccc1c 100644
--- a/src/com/android/server/telecom/RespondViaSmsManager.java
+++ b/src/com/android/server/telecom/RespondViaSmsManager.java
@@ -204,7 +204,7 @@
             for (int i = 0; i < messageParts.size(); i++) {
                 Intent intent = new Intent(ACTION_MESSAGE_SENT);
                 PendingIntent pendingIntent = PendingIntent.getBroadcast(context, i, intent,
-                        PendingIntent.FLAG_ONE_SHOT);
+                        PendingIntent.FLAG_ONE_SHOT | PendingIntent.FLAG_IMMUTABLE);
                 sentIntents.add(pendingIntent);
             }
             MessageSentReceiver receiver = new MessageSentReceiver(