2 files changed, 2 insertions, 2 deletions
diff --git a/src/plugins/platforms/cocoa/qcocoaintegration.h b/src/plugins/platforms/cocoa/qcocoaintegration.h
index 12270b954f..3b79717472 100644
--- a/src/plugins/platforms/cocoa/qcocoaintegration.h
+++ b/src/plugins/platforms/cocoa/qcocoaintegration.h
@@ -77,7 +77,7 @@ public:
 
     // ----------------------------------------------------
     // Additional methods
-    void setVirtualSiblings(QList<QPlatformScreen *> siblings) { m_siblings = siblings; }
+    void setVirtualSiblings(const QList<QPlatformScreen *> &siblings) { m_siblings = siblings; }
     NSScreen *osScreen() const;
     void updateGeometry();
 
diff --git a/src/plugins/platforms/cocoa/qcocoasystemtrayicon.mm b/src/plugins/platforms/cocoa/qcocoasystemtrayicon.mm
index a2be0c9f72..1904a43276 100755
--- a/src/plugins/platforms/cocoa/qcocoasystemtrayicon.mm
+++ b/src/plugins/platforms/cocoa/qcocoasystemtrayicon.mm
@@ -180,7 +180,7 @@ void QCocoaSystemTrayIcon::cleanup()
 }
 
 static bool heightCompareFunction (QSize a, QSize b) { return (a.height() < b.height()); }
-static QList<QSize> sortByHeight(const QList<QSize> sizes)
+static QList<QSize> sortByHeight(const QList<QSize> &sizes)
 {
     QList<QSize> sorted = sizes;
     std::sort(sorted.begin(), sorted.end(), heightCompareFunction);