diff --git a/telecomm/java/android/telecom/ConnectionService.java b/telecomm/java/android/telecom/ConnectionService.java
index d82205e..887a4f0 100755
--- a/telecomm/java/android/telecom/ConnectionService.java
+++ b/telecomm/java/android/telecom/ConnectionService.java
@@ -2297,7 +2297,7 @@
     }
 
     private void playDtmfTone(String callId, char digit) {
-        Log.i(this, "playDtmfTone %s %c", callId, digit);
+        Log.i(this, "playDtmfTone %s %s", callId, Log.pii(digit));
         if (mConnectionById.containsKey(callId)) {
             findConnectionForAction(callId, "playDtmfTone").onPlayDtmfTone(digit);
         } else {