diff --git a/library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java b/library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java
index 5b997fd779..3e7222ebb1 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java
@@ -697,7 +697,7 @@ public final class DefaultAudioSink implements AudioSink {
                 getAudioTrackMinBufferSize(outputSampleRate, outputChannelConfig, outputEncoding),
                 outputEncoding,
                 outputMode,
-                outputPcmFrameSize,
+                outputPcmFrameSize != C.LENGTH_UNSET ? outputPcmFrameSize : 1,
                 outputSampleRate,
                 enableAudioTrackPlaybackParams ? MAX_PLAYBACK_SPEED : DEFAULT_PLAYBACK_SPEED);