diff --git a/kcms/activities/MainConfigurationWidget.h b/kcms/activities/MainConfigurationWidget.h
--- a/kcms/activities/MainConfigurationWidget.h
+++ b/kcms/activities/MainConfigurationWidget.h
@@ -42,6 +42,12 @@
     void load() override;
     void save() override;
 
+private Q_SLOTS:
+    void onChanged();
+
+private:
+    void checkDefault();
+
 private:
     D_PTR;
 };
diff --git a/kcms/activities/MainConfigurationWidget.cpp b/kcms/activities/MainConfigurationWidget.cpp
--- a/kcms/activities/MainConfigurationWidget.cpp
+++ b/kcms/activities/MainConfigurationWidget.cpp
@@ -47,15 +47,26 @@
     d->tabs->insertTab(1, d->tabSwitching  = new SwitchingTab(d->tabs), i18n("Switching"));
     d->tabs->insertTab(2, d->tabPrivacy    = new PrivacyTab(d->tabs), i18n("Privacy"));
 
-    connect(d->tabActivities, SIGNAL(changed()), this, SLOT(changed()));
-    connect(d->tabSwitching,  SIGNAL(changed()), this, SLOT(changed()));
-    connect(d->tabPrivacy,    SIGNAL(changed()), this, SLOT(changed()));
+    connect(d->tabActivities, &ActivitiesTab::changed, this, &MainConfigurationWidget::onChanged);
+    connect(d->tabSwitching,  &SwitchingTab::changed, this, &MainConfigurationWidget::onChanged);
+    connect(d->tabPrivacy,    &PrivacyTab::changed, this, &MainConfigurationWidget::onChanged);
 }
 
 MainConfigurationWidget::~MainConfigurationWidget()
 {
 }
 
+void MainConfigurationWidget::checkDefault()
+{
+    defaulted(d->tabSwitching->isDefault() && d->tabPrivacy->isDefault());
+}
+
+void MainConfigurationWidget::onChanged()
+{
+    checkDefault();
+    markAsChanged();
+}
+
 void MainConfigurationWidget::defaults()
 {
     d->tabActivities->defaults();
@@ -68,6 +79,8 @@
     d->tabActivities->load();
     d->tabPrivacy->load();
     d->tabSwitching->load();
+
+    checkDefault();
 }
 
 void MainConfigurationWidget::save()
diff --git a/kcms/activities/PrivacyTab.h b/kcms/activities/PrivacyTab.h
--- a/kcms/activities/PrivacyTab.h
+++ b/kcms/activities/PrivacyTab.h
@@ -34,6 +34,8 @@
     explicit PrivacyTab(QWidget *parent);
     ~PrivacyTab() override;
 
+    bool isDefault();
+
 public Q_SLOTS:
     void defaults();
     void load();
diff --git a/kcms/activities/PrivacyTab.cpp b/kcms/activities/PrivacyTab.cpp
--- a/kcms/activities/PrivacyTab.cpp
+++ b/kcms/activities/PrivacyTab.cpp
@@ -116,12 +116,6 @@
     connect(d->radioRememberSpecificApplications, &QAbstractButton::toggled,
             d->blacklistedApplicationsModel, &BlacklistedApplicationsModel::setEnabled);
 
-    connect(d->radioRememberSpecificApplications, &QAbstractButton::toggled,
-            d->viewBlacklistedApplicationsContainer, &QWidget::setEnabled);
-
-    connect(d->radioRememberSpecificApplications, &QAbstractButton::toggled,
-            d->checkBlacklistAllNotOnList, &QWidget::setEnabled);
-
     connect(d->checkBlacklistAllNotOnList, &QAbstractButton::toggled, this, &PrivacyTab::changed);
 
     defaults();
@@ -137,6 +131,13 @@
 {
 }
 
+bool PrivacyTab::isDefault()
+{
+    return d->radioRememberAllApplications->isChecked() &&
+            d->spinKeepHistory->value() == d->pluginConfig->defaultKeepHistoryForValue() &&
+            d->checkBlacklistAllNotOnList->isChecked() == d->pluginConfig->defaultBlockedByDefaultValue();
+}
+
 void PrivacyTab::defaults()
 {
     d->blacklistedApplicationsModel->defaults();
diff --git a/kcms/activities/SwitchingTab.h b/kcms/activities/SwitchingTab.h
--- a/kcms/activities/SwitchingTab.h
+++ b/kcms/activities/SwitchingTab.h
@@ -36,6 +36,8 @@
     explicit SwitchingTab(QWidget *parent);
     ~SwitchingTab() override;
 
+    bool isDefault();
+
 public Q_SLOTS:
     void defaults();
     void load();
diff --git a/kcms/activities/SwitchingTab.cpp b/kcms/activities/SwitchingTab.cpp
--- a/kcms/activities/SwitchingTab.cpp
+++ b/kcms/activities/SwitchingTab.cpp
@@ -39,12 +39,13 @@
     KActivities::Consumer activities;
 
     void createAction(const QString &actionName, const QString &actionText,
-                      const QList<QKeySequence> &sequence)
+                      const QList<QKeySequence> &defaultSequence)
     {
         auto action = mainActionCollection->addAction(actionName);
         action->setProperty("isConfigurationAction", true);
         action->setText(actionText);
-        KGlobalAccel::self()->setShortcut(action, sequence);
+        KGlobalAccel::self()->setShortcut(action, defaultSequence);
+        KGlobalAccel::self()->setDefaultShortcut(action, defaultSequence);
     }
 
     Private()
@@ -86,6 +87,11 @@
 {
 }
 
+bool SwitchingTab::isDefault()
+{
+    return !d->checkRememberVirtualDesktop->isChecked();
+}
+
 void SwitchingTab::shortcutChanged(const QKeySequence &sequence)
 {
     QString actionName = sender()
diff --git a/kcms/activities/ui/PrivacyTabBase.ui b/kcms/activities/ui/PrivacyTabBase.ui
--- a/kcms/activities/ui/PrivacyTabBase.ui
+++ b/kcms/activities/ui/PrivacyTabBase.ui
@@ -122,5 +122,38 @@
   </customwidget>
  </customwidgets>
  <resources/>
- <connections/>
+ <connections>
+  <connection>
+   <sender>radioRememberSpecificApplications</sender>
+   <signal>toggled(bool)</signal>
+   <receiver>viewBlacklistedApplicationsContainer</receiver>
+   <slot>setEnabled(bool)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>352</x>
+     <y>167</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>249</x>
+     <y>363</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>radioRememberSpecificApplications</sender>
+   <signal>toggled(bool)</signal>
+   <receiver>checkBlacklistAllNotOnList</receiver>
+   <slot>setEnabled(bool)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>352</x>
+     <y>167</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>252</x>
+     <y>481</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
 </ui>