diff --git a/qtsingleapplication/src/qtlocalpeer.cpp b/qtsingleapplication/src/qtlocalpeer.cpp
index 7e99171..10c7c2f 100644
--- a/qtsingleapplication/src/qtlocalpeer.cpp
+++ b/qtsingleapplication/src/qtlocalpeer.cpp
@@ -46,7 +46,11 @@ QtLocalPeer::QtLocalPeer(QObject* parent, const QString &appId)
     prefix.truncate(6);
 
     QByteArray idc = id.toUtf8();
+#if QT_VERSION < 0x060000
     quint16 idNum = qChecksum(idc.constData(), idc.size());
+#else
+    quint16 idNum = qChecksum(QByteArrayView(idc.constData(), idc.size()));
+#endif
     socketName = QLatin1String("qtsingleapp-") + prefix
                  + QLatin1Char('-') + QString::number(idNum, 16);