1 files changed, 3 insertions, 3 deletions
diff --git a/src/qmmpui/normalcontainer_p.h b/src/qmmpui/normalcontainer_p.h
index 35cb72605..ccf5f7fdc 100644
--- a/src/qmmpui/normalcontainer_p.h
+++ b/src/qmmpui/normalcontainer_p.h
@@ -34,9 +34,9 @@ public:
     NormalContainer();
     virtual ~NormalContainer();
 
-    void addTracks(QList<PlayListTrack *> tracks) override;
+    void addTracks(const QList<PlayListTrack *> &tracks) override;
     void insertTrack(int index, PlayListTrack *track) override;
-    void replaceTracks(QList<PlayListTrack *> tracks) override;
+    void replaceTracks(const QList<PlayListTrack *> &tracks) override;
     QList<PlayListGroup *> groups() const override;
     QList<PlayListTrack *> tracks() const override;
     QList<PlayListItem *> items() const override;
@@ -56,7 +56,7 @@ public:
     PlayListTrack *findTrack(int number) const override;
     void removeTrack(PlayListTrack *track) override;
     void removeTracks(QList<PlayListTrack *> tracks) override;
-    bool move(QList<int> indexes, int from, int to) override;
+    bool move(const QList<int> &indexes, int from, int to) override;
     QList<PlayListTrack *> takeAllTracks() override;
     void clear() override;