diff --git a/src/MusicChunk.hxx b/src/MusicChunk.hxx
index c5be179a9..54c0c7753 100644
--- a/src/MusicChunk.hxx
+++ b/src/MusicChunk.hxx
@@ -84,7 +84,7 @@ struct MusicChunk {
 	 * changed since the last chunk.  The magic value 0 indicates
 	 * that there is no replay gain info available.
 	 */
-	unsigned replay_gain_serial = 0;
+	unsigned replay_gain_serial;
 
 	/** the data (probably PCM) */
 	uint8_t data[CHUNK_SIZE];
diff --git a/src/player/Thread.cxx b/src/player/Thread.cxx
index 7d3d18694..be34d8af9 100644
--- a/src/player/Thread.cxx
+++ b/src/player/Thread.cxx
@@ -561,6 +561,7 @@ Player::SendSilence()
 	chunk->bit_rate = 0;
 	chunk->time = SignedSongTime::Negative(); /* undefined time stamp */
 	chunk->length = num_frames * frame_size;
+	chunk->replay_gain_serial = 0;
 	PcmSilence({chunk->data, chunk->length}, play_audio_format.format);
 
 	try {