diff --git a/src/libs/qmldebug/qmldebugclient.cpp b/src/libs/qmldebug/qmldebugclient.cpp
index aaf3de379f3..52ac357310e 100644
--- a/src/libs/qmldebug/qmldebugclient.cpp
+++ b/src/libs/qmldebug/qmldebugclient.cpp
@@ -385,7 +385,8 @@ void QmlDebugConnection::startLocalServer(const QString &fileName)
         d->server->deleteLater();
     d->server = new QLocalServer(this);
     // QueuedConnection so that waitForNewConnection() returns true.
-    connect(d->server, SIGNAL(newConnection()), this, SLOT(newConnection()), Qt::QueuedConnection);
+    connect(d->server, &QLocalServer::newConnection,
+            this, &QmlDebugConnection::newConnection, Qt::QueuedConnection);
     d->server->listen(fileName);
 }
 
diff --git a/src/libs/qmldebug/qmldebugclient.h b/src/libs/qmldebug/qmldebugclient.h
index 3ea50acae5c..c8d03d56787 100644
--- a/src/libs/qmldebug/qmldebugclient.h
+++ b/src/libs/qmldebug/qmldebugclient.h
@@ -70,13 +70,12 @@ signals:
     void socketError(QAbstractSocket::SocketError error);
     void socketStateChanged(QAbstractSocket::SocketState state);
 
-private slots:
+private:
     void newConnection();
     void socketConnected();
     void socketDisconnected();
     void protocolReadyRead();
 
-private:
     QScopedPointer<QmlDebugConnectionPrivate> d_ptr;
 };
 
diff --git a/src/libs/qmldebug/qpacketprotocol.cpp b/src/libs/qmldebug/qpacketprotocol.cpp
index 1365483e322..9364ffbbbff 100644
--- a/src/libs/qmldebug/qpacketprotocol.cpp
+++ b/src/libs/qmldebug/qpacketprotocol.cpp
@@ -119,7 +119,7 @@ signals:
     void readyRead();
     void invalidPacket();
 
-public slots:
+public:
     void aboutToClose()
     {
         inProgress.clear();