diff --git a/src/Gui/PreferencePages/DlgSettingsGeneral.cpp b/src/Gui/PreferencePages/DlgSettingsGeneral.cpp
index 7b9c563725..7e930e6215 100644
--- a/src/Gui/PreferencePages/DlgSettingsGeneral.cpp
+++ b/src/Gui/PreferencePages/DlgSettingsGeneral.cpp
@@ -92,7 +92,7 @@ DlgSettingsGeneral::DlgSettingsGeneral( QWidget* parent )
     ui->themesCombobox->setEnabled(true);
     Gui::Document* doc = Gui::Application::Instance->activeDocument();
     if (doc) {
-        Gui::View3DInventor* view = static_cast<Gui::View3DInventor*>(doc->getActiveView());
+        Gui::View3DInventor* view = qobject_cast<Gui::View3DInventor*>(doc->getActiveView());
         if (view) {
             Gui::View3DInventorViewer* viewer = view->getViewer();
             if (viewer->isEditing()) {
@@ -640,7 +640,7 @@ void DlgSettingsGeneral::recreatePreferencePackMenu()
         button->setEnabled(true);
         Gui::Document* doc = Gui::Application::Instance->activeDocument();
         if (doc) {
-            Gui::View3DInventor* view = static_cast<Gui::View3DInventor*>(doc->getActiveView());
+            Gui::View3DInventor* view = qobject_cast<Gui::View3DInventor*>(doc->getActiveView());
             if (view) {
                 Gui::View3DInventorViewer* viewer = view->getViewer();
                 if (viewer->isEditing()) {
diff --git a/src/Gui/TextureMapping.cpp b/src/Gui/TextureMapping.cpp
index 72a5e565dd..ecede365c4 100644
--- a/src/Gui/TextureMapping.cpp
+++ b/src/Gui/TextureMapping.cpp
@@ -142,14 +142,13 @@ void TextureMapping::onFileChooserFileNameSelected(const QString& s)
     if (!this->grp) {
         Gui::Document* doc = Gui::Application::Instance->activeDocument();
         if (doc) {
-            Gui::MDIView* mdi = doc->getActiveView();
-            if (mdi && mdi->isDerivedFrom<View3DInventor>()) {
-                Gui::View3DInventorViewer* view = static_cast<View3DInventor*>(mdi)->getViewer();
-                this->grp = static_cast<SoGroup *>(view->getSceneGraph());
+            auto view = qobject_cast<View3DInventor*>(doc->getActiveView());
+            if (view) {
+                this->grp = static_cast<SoGroup*>(view->getViewer()->getSceneGraph());
                 this->grp->ref();
-                this->grp->insertChild(this->tex,1);
+                this->grp->insertChild(this->tex, 1);
                 if (ui->checkEnv->isChecked())
-                    this->grp->insertChild(this->env,2);
+                    this->grp->insertChild(this->env, 2);
             }
         }
     }
diff --git a/src/Gui/ViewProvider.cpp b/src/Gui/ViewProvider.cpp
index 1f04a65a10..45fca8baf4 100644
--- a/src/Gui/ViewProvider.cpp
+++ b/src/Gui/ViewProvider.cpp
@@ -227,12 +227,10 @@ void ViewProvider::eventCallback(void * ud, SoEventCallback * node)
                         // react only on key release
                         // Let first selection mode terminate
                         Gui::Document* doc = Gui::Application::Instance->activeDocument();
-                        auto view = static_cast<Gui::View3DInventor*>(doc->getActiveView());
-                        if (view)
-                        {
+                        const auto view = qobject_cast<Gui::View3DInventor*>(doc->getActiveView());
+                        if (view) {
                             Gui::View3DInventorViewer* viewer = view->getViewer();
-                            if (viewer->isSelecting())
-                            {
+                            if (viewer->isSelecting()) {
                                 return;
                             }
                         }