diff --git a/src/declarativeimports/core/framesvgitem.cpp b/src/declarativeimports/core/framesvgitem.cpp
--- a/src/declarativeimports/core/framesvgitem.cpp
+++ b/src/declarativeimports/core/framesvgitem.cpp
@@ -263,7 +263,7 @@
     m_fixedMargins = new FrameSvgItemMargins(m_frameSvg, this);
     m_fixedMargins->setFixed(true);
     setFlag(ItemHasContents, true);
-    connect(m_frameSvg, SIGNAL(repaintNeeded()), this, SLOT(doUpdate()));
+    connect(m_frameSvg, &FrameSvg::repaintNeeded, this, &FrameSvgItem::doUpdate);
     connect(&Units::instance(), &Units::devicePixelRatioChanged, this, &FrameSvgItem::updateDevicePixelRatio);
     connect(m_frameSvg, &Svg::fromCurrentThemeChanged, this, &FrameSvgItem::fromCurrentThemeChanged);
     connect(m_frameSvg, &Svg::statusChanged, this, &FrameSvgItem::statusChanged);
diff --git a/src/declarativeimports/core/iconitem.cpp b/src/declarativeimports/core/iconitem.cpp
--- a/src/declarativeimports/core/iconitem.cpp
+++ b/src/declarativeimports/core/iconitem.cpp
@@ -54,10 +54,10 @@
       m_animValue(0)
 {
     m_animation = new QPropertyAnimation(this);
-    connect(m_animation, SIGNAL(valueChanged(QVariant)),
-            this, SLOT(valueChanged(QVariant)));
-    connect(m_animation, SIGNAL(finished()),
-            this, SLOT(animationFinished()));
+    connect(m_animation, &QPropertyAnimation::valueChanged,
+            this, &IconItem::valueChanged);
+    connect(m_animation, &QPropertyAnimation::finished,
+            this, &IconItem::animationFinished);
     m_animation->setTargetObject(this);
     m_animation->setEasingCurve(QEasingCurve::InOutQuad);
     m_animation->setDuration(250); //FIXME from theme
@@ -73,8 +73,8 @@
     connect(this, &QQuickItem::windowChanged,
             this, &IconItem::schedulePixmapUpdate);
 
-    connect(this, SIGNAL(overlaysChanged()),
-            this, SLOT(schedulePixmapUpdate()));
+    connect(this, &IconItem::overlaysChanged,
+            this, &IconItem::schedulePixmapUpdate);
 
     connect(this, &IconItem::implicitWidthChanged, this, &IconItem::implicitWidthChanged2);
     connect(this, &IconItem::implicitHeightChanged, this, &IconItem::implicitHeightChanged2);
diff --git a/src/declarativeimports/core/svgitem.cpp b/src/declarativeimports/core/svgitem.cpp
--- a/src/declarativeimports/core/svgitem.cpp
+++ b/src/declarativeimports/core/svgitem.cpp
@@ -92,9 +92,9 @@
     updateDevicePixelRatio();
 
     if (svg) {
-        connect(svg, SIGNAL(repaintNeeded()), this, SLOT(updateNeeded()));
-        connect(svg, SIGNAL(repaintNeeded()), this, SIGNAL(naturalSizeChanged()));
-        connect(svg, SIGNAL(sizeChanged()), this, SIGNAL(naturalSizeChanged()));
+        connect(svg, &Svg::repaintNeeded, this, &SvgItem::updateNeeded);
+        connect(svg, &Svg::repaintNeeded, this, &SvgItem::naturalSizeChanged);
+        connect(svg, &Svg::sizeChanged, this, &SvgItem::naturalSizeChanged);
     }
 
     if (implicitWidth() <= 0) {
diff --git a/src/scriptengines/qml/plasmoid/appletinterface.cpp b/src/scriptengines/qml/plasmoid/appletinterface.cpp
--- a/src/scriptengines/qml/plasmoid/appletinterface.cpp
+++ b/src/scriptengines/qml/plasmoid/appletinterface.cpp
@@ -452,11 +452,11 @@
 
         if (!m_actionSignals) {
             m_actionSignals = new QSignalMapper(this);
-            connect(m_actionSignals, SIGNAL(mapped(QString)),
-                    appletScript(), SLOT(executeAction(QString)));
+            connect(m_actionSignals, static_cast<void(QSignalMapper::*)(const QString &)>(&QSignalMapper::mapped),
+                    appletScript(), &DeclarativeAppletScript::executeAction);
         }
 
-        connect(action, SIGNAL(triggered()), m_actionSignals, SLOT(map()));
+        connect(action, &QAction::triggered, m_actionSignals, static_cast<void(QSignalMapper::*)()>(&QSignalMapper::map));
         m_actionSignals->setMapping(action, name);
     }
 
diff --git a/src/scriptengines/qml/plasmoid/wallpaperinterface.cpp b/src/scriptengines/qml/plasmoid/wallpaperinterface.cpp
--- a/src/scriptengines/qml/plasmoid/wallpaperinterface.cpp
+++ b/src/scriptengines/qml/plasmoid/wallpaperinterface.cpp
@@ -222,11 +222,10 @@
 
         if (!m_actionSignals) {
             m_actionSignals = new QSignalMapper(this);
-            connect(m_actionSignals, SIGNAL(mapped(QString)),
-                    this, SLOT(executeAction(QString)));
+            connect(m_actionSignals, static_cast<void(QSignalMapper::*)(const QString &)>(&QSignalMapper::mapped),
+                    this, &WallpaperInterface::executeAction);
         }
-
-        connect(action, SIGNAL(triggered()), m_actionSignals, SLOT(map()));
+        connect(action, &QAction::triggered, m_actionSignals, static_cast<void(QSignalMapper::*)()>(&QSignalMapper::map));
         m_actionSignals->setMapping(action, name);
     }