diff --git a/src/MusicChunk.hxx b/src/MusicChunk.hxx
index f8ea3621f..8b973d447 100644
--- a/src/MusicChunk.hxx
+++ b/src/MusicChunk.hxx
@@ -95,8 +95,12 @@ struct MusicChunk {
 
 	MusicChunk() = default;
 
+	MusicChunk(const MusicChunk &) = delete;
+
 	~MusicChunk();
 
+	MusicChunk &operator=(const MusicChunk &) = delete;
+
 	bool IsEmpty() const {
 		return length == 0 && tag == nullptr;
 	}