diff --git a/src/abstract_client.cpp b/src/abstract_client.cpp
index 18af2285e8..39910830e5 100644
--- a/src/abstract_client.cpp
+++ b/src/abstract_client.cpp
@@ -2334,7 +2334,7 @@ void AbstractClient::createDecoration(const QRect &oldGeometry)
 {
     KDecoration2::Decoration *decoration = Decoration::DecorationBridge::self()->createDecoration(this);
     if (decoration) {
-        QMetaObject::invokeMethod(decoration, "update", Qt::QueuedConnection);
+        QMetaObject::invokeMethod(decoration, QOverload<>::of(&KDecoration2::Decoration::update), Qt::QueuedConnection);
         connect(decoration, &KDecoration2::Decoration::shadowChanged, this, &Toplevel::updateShadow);
         connect(decoration, &KDecoration2::Decoration::bordersChanged,
                 this, &AbstractClient::updateDecorationInputShape);
diff --git a/src/decorations/decoratedclient.cpp b/src/decorations/decoratedclient.cpp
index 7485e183c9..52552686c5 100644
--- a/src/decorations/decoratedclient.cpp
+++ b/src/decorations/decoratedclient.cpp
@@ -176,7 +176,7 @@ DELEGATE(requestMinimize, minimize)
 
 void DecoratedClientImpl::requestClose()
 {
-    QMetaObject::invokeMethod(m_client, "closeWindow", Qt::QueuedConnection);
+    QMetaObject::invokeMethod(m_client, &AbstractClient::closeWindow, Qt::QueuedConnection);
 }
 
 QColor DecoratedClientImpl::color(KDecoration2::ColorGroup group, KDecoration2::ColorRole role) const
diff --git a/src/effectloader.h b/src/effectloader.h
index 31b0be60a4..de80d9ffcb 100644
--- a/src/effectloader.h
+++ b/src/effectloader.h
@@ -254,7 +254,7 @@ private:
             return;
         }
         m_dequeueScheduled = true;
-        QMetaObject::invokeMethod(this, "dequeue", Qt::QueuedConnection);
+        QMetaObject::invokeMethod(this, &AbstractEffectLoadQueue::dequeue, Qt::QueuedConnection);
     }
     Loader *m_effectLoader;
     bool m_dequeueScheduled;
diff --git a/src/kcmkwin/kwindecoration/kcm.cpp b/src/kcmkwin/kwindecoration/kcm.cpp
index 80e70bc4b3..854cca2f37 100644
--- a/src/kcmkwin/kwindecoration/kcm.cpp
+++ b/src/kcmkwin/kwindecoration/kcm.cpp
@@ -93,7 +93,7 @@ KCMKWinDecoration::KCMKWinDecoration(QObject *parent, const QVariantList &argume
         .connect(QString(), QStringLiteral("/KWin"), QStringLiteral("org.kde.KWin"), QStringLiteral("reloadConfig"),
             this, SLOT(reloadKWinSettings()));
 
-    QMetaObject::invokeMethod(m_themesModel, "init", Qt::QueuedConnection);
+    QMetaObject::invokeMethod(m_themesModel, &KDecoration2::Configuration::DecorationsModel::init, Qt::QueuedConnection);
 }
 
 KWinDecorationSettings *KCMKWinDecoration::settings() const
@@ -103,7 +103,7 @@ KWinDecorationSettings *KCMKWinDecoration::settings() const
 
 void KCMKWinDecoration::reloadKWinSettings()
 {
-    QMetaObject::invokeMethod(m_themesModel, "init", Qt::QueuedConnection);
+    QMetaObject::invokeMethod(m_themesModel, &KDecoration2::Configuration::DecorationsModel::init, Qt::QueuedConnection);
 }
 
 void KCMKWinDecoration::load()
diff --git a/src/libkwineffects/kwinanimationeffect.cpp b/src/libkwineffects/kwinanimationeffect.cpp
index 0c67d260a2..a6ac3a46a4 100644
--- a/src/libkwineffects/kwinanimationeffect.cpp
+++ b/src/libkwineffects/kwinanimationeffect.cpp
@@ -50,7 +50,7 @@ AnimationEffect::AnimationEffect() : d_ptr(new AnimationEffectPrivate())
         s_clock.start();
     /* this is the same as the QTimer::singleShot(0, SLOT(init())) kludge
      * defering the init and esp. the connection to the windowClosed slot */
-    QMetaObject::invokeMethod( this, "init", Qt::QueuedConnection );
+    QMetaObject::invokeMethod(this, &AnimationEffect::init, Qt::QueuedConnection);
 }
 
 AnimationEffect::~AnimationEffect()
diff --git a/src/plugins/platforms/x11/standalone/x11_platform.cpp b/src/plugins/platforms/x11/standalone/x11_platform.cpp
index 21aad82f28..d935f36df8 100644
--- a/src/plugins/platforms/x11/standalone/x11_platform.cpp
+++ b/src/plugins/platforms/x11/standalone/x11_platform.cpp
@@ -292,7 +292,7 @@ void X11StandalonePlatform::createOpenGLSafePoint(OpenGLSafePoint safePoint)
                 }, Qt::DirectConnection);
         } else {
             Q_ASSERT(m_openGLFreezeProtection);
-            QMetaObject::invokeMethod(m_openGLFreezeProtection, "start", Qt::QueuedConnection);
+            QMetaObject::invokeMethod(m_openGLFreezeProtection, QOverload<>::of(&QTimer::start), Qt::QueuedConnection);
         }
         break;
     case OpenGLSafePoint::PostInit:
@@ -301,7 +301,7 @@ void X11StandalonePlatform::createOpenGLSafePoint(OpenGLSafePoint safePoint)
         // Deliberately continue with PostFrame
         Q_FALLTHROUGH();
     case OpenGLSafePoint::PostFrame:
-        QMetaObject::invokeMethod(m_openGLFreezeProtection, "stop", Qt::QueuedConnection);
+        QMetaObject::invokeMethod(m_openGLFreezeProtection, &QTimer::stop, Qt::QueuedConnection);
         break;
     case OpenGLSafePoint::PostLastGuardedFrame:
         m_openGLFreezeProtection->deleteLater();
diff --git a/src/useractions.cpp b/src/useractions.cpp
index 233e7002ce..5ae3774770 100644
--- a/src/useractions.cpp
+++ b/src/useractions.cpp
@@ -765,10 +765,7 @@ void UserActionsMenu::slotWindowOperation(QAction *action)
     // need to delay performing the window operation as we need to have the
     // user actions menu closed before we destroy the decoration. Otherwise Qt crashes
     qRegisterMetaType<Options::WindowOperation>();
-    QMetaObject::invokeMethod(workspace(), "performWindowOperation",
-                              Qt::QueuedConnection,
-                              Q_ARG(KWin::AbstractClient*, c),
-                              Q_ARG(Options::WindowOperation, op));
+    QMetaObject::invokeMethod(workspace(), std::bind(&Workspace::performWindowOperation, workspace(), c, op), Qt::QueuedConnection);
 }
 
 void UserActionsMenu::slotToggleOnActivity(QAction *action)
@@ -1191,7 +1188,7 @@ void Workspace::performWindowOperation(AbstractClient* c, Options::WindowOperati
         c->performMouseCommand(Options::MouseUnrestrictedResize, Cursors::self()->mouse()->pos());
         break;
     case Options::CloseOp:
-        QMetaObject::invokeMethod(c, "closeWindow", Qt::QueuedConnection);
+        QMetaObject::invokeMethod(c, &AbstractClient::closeWindow, Qt::QueuedConnection);
         break;
     case Options::MaximizeOp:
         c->maximize(c->maximizeMode() == MaximizeFull
diff --git a/src/x11client.cpp b/src/x11client.cpp
index c5031b3f1c..59e150cbbd 100644
--- a/src/x11client.cpp
+++ b/src/x11client.cpp
@@ -1117,7 +1117,7 @@ void X11Client::createDecoration(const QRect& oldgeom)
 {
     KDecoration2::Decoration *decoration = Decoration::DecorationBridge::self()->createDecoration(this);
     if (decoration) {
-        QMetaObject::invokeMethod(decoration, "update", Qt::QueuedConnection);
+        QMetaObject::invokeMethod(decoration, QOverload<>::of(&KDecoration2::Decoration::update), Qt::QueuedConnection);
         connect(decoration, &KDecoration2::Decoration::shadowChanged, this, &Toplevel::updateShadow);
         connect(decoration, &KDecoration2::Decoration::bordersChanged,
                 this, &X11Client::updateDecorationInputShape);