diff --git a/src/com/android/dialer/voicemail/VoicemailPlaybackPresenter.java b/src/com/android/dialer/voicemail/VoicemailPlaybackPresenter.java
index da2a29c..a0e4854 100644
--- a/src/com/android/dialer/voicemail/VoicemailPlaybackPresenter.java
+++ b/src/com/android/dialer/voicemail/VoicemailPlaybackPresenter.java
@@ -523,7 +523,8 @@
     }
 
     private void enableProximitySensor() {
-        if (mProximityWakeLock == null || isSpeakerphoneOn() || !mMediaPlayer.isPlaying()) {
+        if (mProximityWakeLock == null || isSpeakerphoneOn() ||
+                !mIsPrepared || !mMediaPlayer.isPlaying()) {
             return;
         }