diff --git a/src/core/filesystemmusicstorage.h b/src/core/filesystemmusicstorage.h
index e479886e0..6a5766eee 100644
--- a/src/core/filesystemmusicstorage.h
+++ b/src/core/filesystemmusicstorage.h
@@ -35,7 +35,7 @@ class FilesystemMusicStorage : public virtual MusicStorage {
   explicit FilesystemMusicStorage(const QString &root, const std::optional<int> collection_directory_id = std::optional<int>());
 
   QString LocalPath() const override { return root_; }
-  std::optional<int> collection_directory_id() const { return collection_directory_id_; }
+  std::optional<int> collection_directory_id() const override { return collection_directory_id_; }
 
   bool CopyToStorage(const CopyJob &job) override;
   bool DeleteFromStorage(const DeleteJob &job) override;