diff --git a/java/com/android/incallui/rtt/impl/RttChatFragment.java b/java/com/android/incallui/rtt/impl/RttChatFragment.java
index c393393..e61ce3e 100644
--- a/java/com/android/incallui/rtt/impl/RttChatFragment.java
+++ b/java/com/android/incallui/rtt/impl/RttChatFragment.java
@@ -358,6 +358,7 @@
 
   @Override
   public void onRttScreenStart() {
+    inCallButtonUiDelegate.refreshMuteState();
     rttCallScreenDelegate.onRttCallScreenUiReady();
     Activity activity = getActivity();
     Window window = getActivity().getWindow();