diff --git a/src/particles/qquickcustomaffector.cpp b/src/particles/qquickcustomaffector.cpp
index 72b1536c541d9b3e2cc784767934ed08de8ff7e8..819dd128fa9d1c9b498e615df0b8cacf83b92890 100644
--- a/src/particles/qquickcustomaffector.cpp
+++ b/src/particles/qquickcustomaffector.cpp
@@ -103,7 +103,7 @@ QQuickCustomAffector::QQuickCustomAffector(QQuickItem *parent) :
 
 bool QQuickCustomAffector::isAffectConnected()
 {
-    IS_SIGNAL_CONNECTED(this, "affectParticles(QQmlV8Handle,qreal)");
+    IS_SIGNAL_CONNECTED(this, QQuickCustomAffector, affectParticles, (QQmlV8Handle,qreal));
 }
 
 void QQuickCustomAffector::affectSystem(qreal dt)
diff --git a/src/particles/qquickparticleaffector.cpp b/src/particles/qquickparticleaffector.cpp
index 978c53e9a23b9302a1bf47d89b1dfd57ab971539..61396b1579ffaa9b25dcda2e3a6f5c8726be1905 100644
--- a/src/particles/qquickparticleaffector.cpp
+++ b/src/particles/qquickparticleaffector.cpp
@@ -135,7 +135,7 @@ QQuickParticleAffector::QQuickParticleAffector(QQuickItem *parent) :
 
 bool QQuickParticleAffector::isAffectedConnected()
 {
-    IS_SIGNAL_CONNECTED(this, "affected(qreal,qreal)");
+    IS_SIGNAL_CONNECTED(this, QQuickParticleAffector, affected, (qreal,qreal));
 }
 
 
diff --git a/src/particles/qquickparticleemitter.cpp b/src/particles/qquickparticleemitter.cpp
index eb965a7f81c23716fb8635a938ebb016b4c6169c..6e53b0940ce669ea677573f8013672d8b3ee0962 100644
--- a/src/particles/qquickparticleemitter.cpp
+++ b/src/particles/qquickparticleemitter.cpp
@@ -255,7 +255,7 @@ QQuickParticleEmitter::~QQuickParticleEmitter()
 
 bool QQuickParticleEmitter::isEmitConnected()
 {
-    IS_SIGNAL_CONNECTED(this, "emitParticles(QQmlV8Handle)");
+    IS_SIGNAL_CONNECTED(this, QQuickParticleEmitter, emitParticles, (QQmlV8Handle));
 }
 
 void QQuickParticleEmitter::componentComplete()
diff --git a/src/particles/qquicktrailemitter.cpp b/src/particles/qquicktrailemitter.cpp
index e9d86118c03edd569e50da2a5597dc025bc4a480..68b43a0e991372d2b8e903e4a81650beec21d819 100644
--- a/src/particles/qquicktrailemitter.cpp
+++ b/src/particles/qquicktrailemitter.cpp
@@ -128,7 +128,7 @@ QQuickTrailEmitter::QQuickTrailEmitter(QQuickItem *parent) :
 
 bool QQuickTrailEmitter::isEmitFollowConnected()
 {
-    IS_SIGNAL_CONNECTED(this, "emitFollowParticles(QQmlV8Handle,QQmlV8Handle)");
+    IS_SIGNAL_CONNECTED(this, QQuickTrailEmitter, emitFollowParticles, (QQmlV8Handle,QQmlV8Handle));
 }
 
 void QQuickTrailEmitter::recalcParticlesPerSecond(){
diff --git a/src/qml/qml/qqmlglobal_p.h b/src/qml/qml/qqmlglobal_p.h
index 3ed7286ed99646f9e178224391f13a810d67543e..75974a4e7c54aec67029ae9145e913e8c576bae2 100644
--- a/src/qml/qml/qqmlglobal_p.h
+++ b/src/qml/qml/qqmlglobal_p.h
@@ -45,6 +45,7 @@
 #include <private/qtqmlglobal_p.h>
 #include <QtCore/QObject>
 #include <private/qqmlpropertycache_p.h>
+#include <private/qmetaobject_p.h>
 
 QT_BEGIN_HEADER
 
@@ -165,16 +166,13 @@ T qmlobject_cast(QObject *object)
 
 bool Q_QML_PRIVATE_EXPORT QQml_isSignalConnected(QObject*, int, int);
 
-#define IS_SIGNAL_CONNECTED(Sender, Signal) \
+#define IS_SIGNAL_CONNECTED(Sender, SenderType, Name, Arguments) \
 do { \
     QObject *sender = (Sender); \
-    const char *signal = (Signal); \
-    static int signalIdx = -1; \
-    static int methodIdx = -1; \
-    if (signalIdx < 0) { \
-        signalIdx = QObjectPrivate::get(sender)->signalIndex(signal); \
-        methodIdx = sender->metaObject()->indexOfSignal(signal); \
-    } \
+    void (SenderType::*signal)Arguments = &SenderType::Name; \
+    static QMetaMethod method = QMetaMethod::fromSignal(signal); \
+    static int signalIdx = QMetaObjectPrivate::signalIndex(method); \
+    static int methodIdx = method.methodIndex(); \
     return QQml_isSignalConnected(sender, signalIdx, methodIdx); \
 } while (0)
 
diff --git a/src/quick/items/context2d/qquickcanvasitem.cpp b/src/quick/items/context2d/qquickcanvasitem.cpp
index 88f0fd11cac124424f1e2cc103a5665f6bd6abf2..24d71acf265f763876fb862a4c909d6f486a2590 100644
--- a/src/quick/items/context2d/qquickcanvasitem.cpp
+++ b/src/quick/items/context2d/qquickcanvasitem.cpp
@@ -556,7 +556,7 @@ QQuickCanvasContext* QQuickCanvasItem::rawContext() const
 
 bool QQuickCanvasItem::isPaintConnected()
 {
-    IS_SIGNAL_CONNECTED(this, "paint(QRect)");
+    IS_SIGNAL_CONNECTED(this, QQuickCanvasItem, paint, (const QRect &));
 }
 
 void QQuickCanvasItem::sceneGraphInitialized()
@@ -1074,4 +1074,4 @@ QRect QQuickCanvasItem::tiledRect(const QRectF &window, const QSize &tileSize)
     the Canvas has been rendered.
 */
 
-QT_END_NAMESPACE
\ No newline at end of file
+QT_END_NAMESPACE
diff --git a/src/quick/items/qquickmousearea.cpp b/src/quick/items/qquickmousearea.cpp
index e56197655362edde2c065383661815503aaab58a..c1d1c9dd8de1da7d5a1b067821cd63618f38d19a 100644
--- a/src/quick/items/qquickmousearea.cpp
+++ b/src/quick/items/qquickmousearea.cpp
@@ -220,25 +220,25 @@ void QQuickMouseAreaPrivate::saveEvent(QMouseEvent *event)
 bool QQuickMouseAreaPrivate::isPressAndHoldConnected()
 {
     Q_Q(QQuickMouseArea);
-    IS_SIGNAL_CONNECTED(q, "pressAndHold(QQuickMouseEvent*)");
+    IS_SIGNAL_CONNECTED(q, QQuickMouseArea, pressAndHold, (QQuickMouseEvent *));
 }
 
 bool QQuickMouseAreaPrivate::isDoubleClickConnected()
 {
     Q_Q(QQuickMouseArea);
-    IS_SIGNAL_CONNECTED(q, "doubleClicked(QQuickMouseEvent*)");
+    IS_SIGNAL_CONNECTED(q, QQuickMouseArea, doubleClicked, (QQuickMouseEvent *));
 }
 
 bool QQuickMouseAreaPrivate::isClickConnected()
 {
     Q_Q(QQuickMouseArea);
-    IS_SIGNAL_CONNECTED(q, "clicked(QQuickMouseEvent*)");
+    IS_SIGNAL_CONNECTED(q, QQuickMouseArea, clicked, (QQuickMouseEvent *));
 }
 
 bool QQuickMouseAreaPrivate::isWheelConnected()
 {
     Q_Q(QQuickMouseArea);
-    IS_SIGNAL_CONNECTED(q, "wheel(QQuickWheelEvent*)");
+    IS_SIGNAL_CONNECTED(q, QQuickMouseArea, wheel, (QQuickWheelEvent *));
 }
 
 void QQuickMouseAreaPrivate::propagate(QQuickMouseEvent* event, PropagateType t)
diff --git a/src/quick/items/qquicktext.cpp b/src/quick/items/qquicktext.cpp
index 1f16cbdb51929944b2a0437029e025068a8f4363..4ab56494a090e82a740d1a75d0ffb617ceb00dbb 100644
--- a/src/quick/items/qquicktext.cpp
+++ b/src/quick/items/qquicktext.cpp
@@ -595,7 +595,7 @@ void QQuickText::doLayout()
 bool QQuickTextPrivate::isLineLaidOutConnected()
 {
     Q_Q(QQuickText);
-    IS_SIGNAL_CONNECTED(q, "lineLaidOut(QQuickTextLine*)");
+    IS_SIGNAL_CONNECTED(q, QQuickText, lineLaidOut, (QQuickTextLine *));
 }
 
 void QQuickTextPrivate::setupCustomLineGeometry(QTextLine &line, qreal &height, int lineOffset)
@@ -2422,7 +2422,7 @@ QString QQuickTextPrivate::anchorAt(const QPointF &mousePos)
 bool QQuickTextPrivate::isLinkActivatedConnected()
 {
     Q_Q(QQuickText);
-    IS_SIGNAL_CONNECTED(q, "linkActivated(QString)");
+    IS_SIGNAL_CONNECTED(q, QQuickText, linkActivated, (const QString &));
 }
 
 /*!  \internal */
diff --git a/src/quick/items/qquickvisualdatamodel.cpp b/src/quick/items/qquickvisualdatamodel.cpp
index fe0dd00cbe29a80ad8861d2dcc8b927e62609396..6f5934e4f1b4b449e0341393608208f1d4ee09f3 100644
--- a/src/quick/items/qquickvisualdatamodel.cpp
+++ b/src/quick/items/qquickvisualdatamodel.cpp
@@ -2060,15 +2060,16 @@ void QQuickVisualDataGroupPrivate::setModel(QQuickVisualDataModel *m, Compositor
     group = g;
 }
 
-static bool isChangedConnected(QObject *obj)
+bool QQuickVisualDataGroupPrivate::isChangedConnected()
 {
-    IS_SIGNAL_CONNECTED(obj, "changed(QQmlV8Handle,QQmlV8Handle)");
+    Q_Q(QQuickVisualDataGroup);
+    IS_SIGNAL_CONNECTED(q, QQuickVisualDataGroup, changed, (const QQmlV8Handle &,const QQmlV8Handle &));
 }
 
 void QQuickVisualDataGroupPrivate::emitChanges(QV8Engine *engine)
 {
     Q_Q(QQuickVisualDataGroup);
-    if (isChangedConnected(q) && !changeSet.isEmpty()) {
+    if (isChangedConnected() && !changeSet.isEmpty()) {
         v8::HandleScope handleScope;
         v8::Context::Scope contextScope(engine->context());
         v8::Local<v8::Object> removed  = engineData(engine)->array(engine, changeSet.removes());
diff --git a/src/quick/items/qquickvisualdatamodel_p_p.h b/src/quick/items/qquickvisualdatamodel_p_p.h
index 9a6c8c3738b295c548ab9ef7f9634226f2fa427f..b88c8a42da0eb5c5e3095d6c26369d4b236d67c2 100644
--- a/src/quick/items/qquickvisualdatamodel_p_p.h
+++ b/src/quick/items/qquickvisualdatamodel_p_p.h
@@ -210,6 +210,7 @@ public:
         return static_cast<QQuickVisualDataGroupPrivate *>(QObjectPrivate::get(group)); }
 
     void setModel(QQuickVisualDataModel *model, Compositor::Group group);
+    bool isChangedConnected();
     void emitChanges(QV8Engine *engine);
     void emitModelUpdated(bool reset);