diff --git a/src/Base/FutureWatcherProgress.h b/src/Base/FutureWatcherProgress.h
index ad45a60530..2a37cdd7df 100644
--- a/src/Base/FutureWatcherProgress.h
+++ b/src/Base/FutureWatcherProgress.h
@@ -44,7 +44,7 @@ public:
     FutureWatcherProgress& operator= (const FutureWatcherProgress&) = delete;
     FutureWatcherProgress& operator= (FutureWatcherProgress&&) = delete;
 
-private Q_SLOTS:
+public Q_SLOTS:
     void progressValueChanged(int value);
 
 private:
diff --git a/src/Mod/Inspection/App/InspectionFeature.cpp b/src/Mod/Inspection/App/InspectionFeature.cpp
index 0208d99e80..44384a8575 100644
--- a/src/Mod/Inspection/App/InspectionFeature.cpp
+++ b/src/Mod/Inspection/App/InspectionFeature.cpp
@@ -822,12 +822,12 @@ App::DocumentObjectExecReturn* Feature::execute(void)
     //future.waitForFinished(); // blocks the GUI
     Base::FutureWatcherProgress progress("Inspecting...", actual->countPoints());
     QFutureWatcher<float> watcher;
-    QObject::connect(&watcher, SIGNAL(progressValueChanged(int)),
-                     &progress, SLOT(progressValueChanged(int)));
+    QObject::connect(&watcher, &QFutureWatcher<float>::progressValueChanged,
+                     &progress, &Base::FutureWatcherProgress::progressValueChanged);
 
     // keep it responsive during computation
     QEventLoop loop;
-    QObject::connect(&watcher, SIGNAL(finished()), &loop, SLOT(quit()));
+    QObject::connect(&watcher, &QFutureWatcher::finished, &loop, &QEventLoop::quit);
     watcher.setFuture(future);
     loop.exec();
 
@@ -908,11 +908,12 @@ App::DocumentObjectExecReturn* Feature::execute(void)
         // Setup progress bar
         Base::FutureWatcherProgress progress("Inspecting...", actual->countPoints());
         QFutureWatcher<DistanceInspectionRMS> watcher;
-        QObject::connect(&watcher, SIGNAL(progressValueChanged(int)),
-            &progress, SLOT(progressValueChanged(int)));
+        QObject::connect(&watcher, &QFutureWatcher<DistanceInspectionRMS>::progressValueChanged,
+                         &progress, &Base::FutureWatcherProgress::progressValueChanged);
         // Keep UI responsive during computation
         QEventLoop loop;
-        QObject::connect(&watcher, SIGNAL(finished()), &loop, SLOT(quit()));
+        QObject::connect(&watcher, &QFutureWatcher<DistanceInspectionRMS>::finished,
+                         &loop, &QEventLoop::quit);
         watcher.setFuture(future);
         loop.exec();
         res = future.result();
diff --git a/src/Mod/Inspection/Gui/VisualInspection.cpp b/src/Mod/Inspection/Gui/VisualInspection.cpp
index 7fb0317901..d8bf609bf7 100644
--- a/src/Mod/Inspection/Gui/VisualInspection.cpp
+++ b/src/Mod/Inspection/Gui/VisualInspection.cpp
@@ -83,12 +83,12 @@ VisualInspection::VisualInspection(QWidget* parent, Qt::WindowFlags fl)
     : QDialog(parent, fl), ui(new Ui_VisualInspection)
 {
     ui->setupUi(this);
-    connect(ui->treeWidgetActual, SIGNAL(itemClicked(QTreeWidgetItem*, int)), 
-            this, SLOT(onActivateItem(QTreeWidgetItem*)));
-    connect(ui->treeWidgetNominal, SIGNAL(itemClicked(QTreeWidgetItem*, int)), 
-            this, SLOT(onActivateItem(QTreeWidgetItem*)));
-    connect(ui->buttonBox, SIGNAL(helpRequested()),
-            Gui::getMainWindow(), SLOT(whatsThis()));
+    connect(ui->treeWidgetActual, &QTreeWidget::itemClicked,
+            this, &VisualInspection::onActivateItem);
+    connect(ui->treeWidgetNominal, &QTreeWidget::itemClicked,
+            this, &VisualInspection::onActivateItem);
+    connect(ui->buttonBox, &QDialogButtonBox::helpRequested,
+            Gui::getMainWindow(), &Gui::MainWindow::whatsThis);
 
     //FIXME: Not used yet
     ui->textLabel2->hide();