diff --git a/3rdparty/kdepim/libkdepim/kdateedit.h b/3rdparty/kdepim/libkdepim/kdateedit.h
--- a/3rdparty/kdepim/libkdepim/kdateedit.h
+++ b/3rdparty/kdepim/libkdepim/kdateedit.h
@@ -82,7 +82,7 @@
      */
     bool isReadOnly() const;
 
-    virtual void showPopup();
+    void showPopup() override;
 
   Q_SIGNALS:
     /**
@@ -114,11 +114,11 @@
     void dateSelected( const QDate & );
 
   protected:
-    virtual bool eventFilter( QObject *, QEvent * );
-    virtual void mousePressEvent( QMouseEvent * );
-    virtual void focusOutEvent( QFocusEvent * );
-    virtual void wheelEvent( QWheelEvent * );
-    virtual void keyPressEvent( QKeyEvent * );
+    bool eventFilter( QObject *, QEvent * ) override;
+    void mousePressEvent( QMouseEvent * ) override;
+    void focusOutEvent( QFocusEvent * ) override;
+    void wheelEvent( QWheelEvent * ) override;
+    void keyPressEvent( QKeyEvent * ) override;
 
     /**
       Sets the date, without altering the display.
diff --git a/3rdparty/mockitopp/detail/stubbing/action.hpp b/3rdparty/mockitopp/detail/stubbing/action.hpp
--- a/3rdparty/mockitopp/detail/stubbing/action.hpp
+++ b/3rdparty/mockitopp/detail/stubbing/action.hpp
@@ -22,13 +22,13 @@
             : _returnable(returnable)
             {}
 
-         R invoke() { return _returnable; }
+         R invoke() override { return _returnable; }
       };
 
       template <>
       struct returnable_action<void> : public action<void>
       {
-         void invoke() {}
+         void invoke() override {}
       };
 
       template <typename R, typename T>
@@ -40,7 +40,7 @@
             : _throwable(throwable)
             {}
 
-         R invoke() { throw _throwable; }
+         R invoke() override { throw _throwable; }
       };
    } // namespace detail
 } // namespace mockitopp
diff --git a/3rdparty/mockitopp/matchers/base/any.hpp b/3rdparty/mockitopp/matchers/base/any.hpp
--- a/3rdparty/mockitopp/matchers/base/any.hpp
+++ b/3rdparty/mockitopp/matchers/base/any.hpp
@@ -15,10 +15,10 @@
             AnyT()
                {}
 
-            virtual Matcher<T>* clone() const
+            Matcher<T>* clone() const override
                { return new AnyT(); }
 
-            virtual bool operator== (typename mockitopp::detail::tr1::add_reference<typename mockitopp::detail::tr1::add_const<T>::type>::type rhs) const
+            bool operator== (typename mockitopp::detail::tr1::add_reference<typename mockitopp::detail::tr1::add_const<T>::type>::type rhs) const override
             { 
                (void)rhs;
                return true; 
diff --git a/3rdparty/mockitopp/matchers/base/equal.hpp b/3rdparty/mockitopp/matchers/base/equal.hpp
--- a/3rdparty/mockitopp/matchers/base/equal.hpp
+++ b/3rdparty/mockitopp/matchers/base/equal.hpp
@@ -18,11 +18,11 @@
                : element_(element)
                {}
 
-            virtual Matcher<T>* clone() const
+            Matcher<T>* clone() const override
                { return new EqualT(element_); }
 
-            virtual bool operator== (typename mockitopp::detail::tr1::add_reference<
-                                       typename mockitopp::detail::tr1::add_const<T>::type>::type rhs) const
+            bool operator== (typename mockitopp::detail::tr1::add_reference<
+                                       typename mockitopp::detail::tr1::add_const<T>::type>::type rhs) const override
                { return element_ == rhs; }
 
             private:
diff --git a/src/domain/queryresult.h b/src/domain/queryresult.h
--- a/src/domain/queryresult.h
+++ b/src/domain/queryresult.h
@@ -57,37 +57,37 @@
         return create(provider);
     }
 
-    QList<OutputType> data() const
+    QList<OutputType> data() const override
     {
         return dataImpl<OutputType>();
     }
 
-    void addPreInsertHandler(const ChangeHandler &handler)
+    void addPreInsertHandler(const ChangeHandler &handler) override
     {
         QueryResultInputImpl<InputType>::m_preInsertHandlers << handler;
     }
 
-    void addPostInsertHandler(const ChangeHandler &handler)
+    void addPostInsertHandler(const ChangeHandler &handler) override
     {
         QueryResultInputImpl<InputType>::m_postInsertHandlers << handler;
     }
 
-    void addPreRemoveHandler(const ChangeHandler &handler)
+    void addPreRemoveHandler(const ChangeHandler &handler) override
     {
         QueryResultInputImpl<InputType>::m_preRemoveHandlers << handler;
     }
 
-    void addPostRemoveHandler(const ChangeHandler &handler)
+    void addPostRemoveHandler(const ChangeHandler &handler) override
     {
         QueryResultInputImpl<InputType>::m_postRemoveHandlers << handler;
     }
 
-    void addPreReplaceHandler(const ChangeHandler &handler)
+    void addPreReplaceHandler(const ChangeHandler &handler) override
     {
         QueryResultInputImpl<InputType>::m_preReplaceHandlers << handler;
     }
 
-    void addPostReplaceHandler(const ChangeHandler &handler)
+    void addPostReplaceHandler(const ChangeHandler &handler) override
     {
         QueryResultInputImpl<InputType>::m_postReplaceHandlers << handler;
     }
diff --git a/src/presentation/availablepagessortfilterproxymodel.h b/src/presentation/availablepagessortfilterproxymodel.h
--- a/src/presentation/availablepagessortfilterproxymodel.h
+++ b/src/presentation/availablepagessortfilterproxymodel.h
@@ -37,7 +37,7 @@
     explicit AvailablePagesSortFilterProxyModel(QObject *parent = 0);
 
 protected:
-    bool lessThan(const QModelIndex &left, const QModelIndex &right) const;
+    bool lessThan(const QModelIndex &left, const QModelIndex &right) const override;
 };
 
 }
diff --git a/src/zanshin/runner/zanshinrunner.h b/src/zanshin/runner/zanshinrunner.h
--- a/src/zanshin/runner/zanshinrunner.h
+++ b/src/zanshin/runner/zanshinrunner.h
@@ -37,8 +37,8 @@
     ZanshinRunner(QObject *parent, const QVariantList &args);
     ~ZanshinRunner();
 
-    void match(Plasma::RunnerContext &context);
-    void run(const Plasma::RunnerContext &context, const Plasma::QueryMatch &action);
+    void match(Plasma::RunnerContext &context) override;
+    void run(const Plasma::RunnerContext &context, const Plasma::QueryMatch &action) override;
 private:
     Domain::TaskRepository::Ptr m_taskRepository;
 };
diff --git a/tests/testlib/fakejob.h b/tests/testlib/fakejob.h
--- a/tests/testlib/fakejob.h
+++ b/tests/testlib/fakejob.h
@@ -35,7 +35,7 @@
 
     void setExpectedError(int errorCode, const QString &errorText = QString());
 
-    void start();
+    void start() override;
 
 private slots:
     virtual void onTimeout();
diff --git a/tests/units/domain/queryresulttest.cpp b/tests/units/domain/queryresulttest.cpp
--- a/tests/units/domain/queryresulttest.cpp
+++ b/tests/units/domain/queryresulttest.cpp
@@ -41,7 +41,7 @@
 public:
     typedef QSharedPointer<Derived> Ptr;
 
-    QString whoAmI() { return QStringLiteral("I'm Derived"); }
+    QString whoAmI() override { return QStringLiteral("I'm Derived"); }
 };
 
 class QueryResultTest : public QObject
diff --git a/tests/units/presentation/applicationmodeltest.cpp b/tests/units/presentation/applicationmodeltest.cpp
--- a/tests/units/presentation/applicationmodeltest.cpp
+++ b/tests/units/presentation/applicationmodeltest.cpp
@@ -42,7 +42,7 @@
 class FakeErrorHandler : public Presentation::ErrorHandler
 {
 public:
-    void doDisplayMessage(const QString &message)
+    void doDisplayMessage(const QString &message) override
     {
         m_message = message;
     }
diff --git a/tests/units/presentation/artifacteditormodeltest.cpp b/tests/units/presentation/artifacteditormodeltest.cpp
--- a/tests/units/presentation/artifacteditormodeltest.cpp
+++ b/tests/units/presentation/artifacteditormodeltest.cpp
@@ -41,7 +41,7 @@
 class FakeErrorHandler : public Presentation::ErrorHandler
 {
 public:
-    void doDisplayMessage(const QString &message)
+    void doDisplayMessage(const QString &message) override
     {
         m_message = message;
     }
diff --git a/tests/units/presentation/availablenotepagesmodeltest.cpp b/tests/units/presentation/availablenotepagesmodeltest.cpp
--- a/tests/units/presentation/availablenotepagesmodeltest.cpp
+++ b/tests/units/presentation/availablenotepagesmodeltest.cpp
@@ -45,7 +45,7 @@
 class FakeErrorHandler : public Presentation::ErrorHandler
 {
 public:
-    void doDisplayMessage(const QString &message)
+    void doDisplayMessage(const QString &message) override
     {
         m_message = message;
     }
diff --git a/tests/units/presentation/availablesourcesmodeltest.cpp b/tests/units/presentation/availablesourcesmodeltest.cpp
--- a/tests/units/presentation/availablesourcesmodeltest.cpp
+++ b/tests/units/presentation/availablesourcesmodeltest.cpp
@@ -44,7 +44,7 @@
 class FakeErrorHandler : public Presentation::ErrorHandler
 {
 public:
-    void doDisplayMessage(const QString &message)
+    void doDisplayMessage(const QString &message) override
     {
         m_message = message;
     }
diff --git a/tests/units/presentation/availabletaskpagesmodeltest.cpp b/tests/units/presentation/availabletaskpagesmodeltest.cpp
--- a/tests/units/presentation/availabletaskpagesmodeltest.cpp
+++ b/tests/units/presentation/availabletaskpagesmodeltest.cpp
@@ -50,7 +50,7 @@
 class FakeErrorHandler : public Presentation::ErrorHandler
 {
 public:
-    void doDisplayMessage(const QString &message)
+    void doDisplayMessage(const QString &message) override
     {
         m_message = message;
     }
diff --git a/tests/units/presentation/contextpagemodeltest.cpp b/tests/units/presentation/contextpagemodeltest.cpp
--- a/tests/units/presentation/contextpagemodeltest.cpp
+++ b/tests/units/presentation/contextpagemodeltest.cpp
@@ -50,7 +50,7 @@
 class FakeErrorHandler : public Presentation::ErrorHandler
 {
 public:
-    void doDisplayMessage(const QString &message)
+    void doDisplayMessage(const QString &message) override
     {
         m_message = message;
     }
diff --git a/tests/units/presentation/errorhandlertest.cpp b/tests/units/presentation/errorhandlertest.cpp
--- a/tests/units/presentation/errorhandlertest.cpp
+++ b/tests/units/presentation/errorhandlertest.cpp
@@ -30,7 +30,7 @@
 class FakeErrorHandler : public Presentation::ErrorHandler
 {
 public:
-    void doDisplayMessage(const QString &message)
+    void doDisplayMessage(const QString &message) override
     {
         m_message = message;
     }
diff --git a/tests/units/presentation/errorhandlingmodelbasetest.cpp b/tests/units/presentation/errorhandlingmodelbasetest.cpp
--- a/tests/units/presentation/errorhandlingmodelbasetest.cpp
+++ b/tests/units/presentation/errorhandlingmodelbasetest.cpp
@@ -31,7 +31,7 @@
 class FakeErrorHandler : public Presentation::ErrorHandler
 {
 public:
-    void doDisplayMessage(const QString &message)
+    void doDisplayMessage(const QString &message) override
     {
         m_message = message;
     }
diff --git a/tests/units/presentation/noteinboxpagemodeltest.cpp b/tests/units/presentation/noteinboxpagemodeltest.cpp
--- a/tests/units/presentation/noteinboxpagemodeltest.cpp
+++ b/tests/units/presentation/noteinboxpagemodeltest.cpp
@@ -40,7 +40,7 @@
 class FakeErrorHandler : public Presentation::ErrorHandler
 {
 public:
-    void doDisplayMessage(const QString &message)
+    void doDisplayMessage(const QString &message) override
     {
         m_message = message;
     }
diff --git a/tests/units/presentation/pagemodeltest.cpp b/tests/units/presentation/pagemodeltest.cpp
--- a/tests/units/presentation/pagemodeltest.cpp
+++ b/tests/units/presentation/pagemodeltest.cpp
@@ -38,12 +38,12 @@
     {
     }
 
-    Domain::Artifact::Ptr addItem(const QString &, const QModelIndex &) { return Domain::Artifact::Ptr::create(); }
-    void removeItem(const QModelIndex &) {}
-    void promoteItem(const QModelIndex &) {}
+    Domain::Artifact::Ptr addItem(const QString &, const QModelIndex &) override { return Domain::Artifact::Ptr::create(); }
+    void removeItem(const QModelIndex &) override {}
+    void promoteItem(const QModelIndex &) override {}
 
 private:
-    QAbstractItemModel *createCentralListModel()
+    QAbstractItemModel *createCentralListModel() override
     {
         createCount++;
         itemModel = new QStringListModel(this);
diff --git a/tests/units/presentation/projectpagemodeltest.cpp b/tests/units/presentation/projectpagemodeltest.cpp
--- a/tests/units/presentation/projectpagemodeltest.cpp
+++ b/tests/units/presentation/projectpagemodeltest.cpp
@@ -40,7 +40,7 @@
 class FakeErrorHandler : public Presentation::ErrorHandler
 {
 public:
-    void doDisplayMessage(const QString &message)
+    void doDisplayMessage(const QString &message) override
     {
         m_message = message;
     }
diff --git a/tests/units/presentation/tagpagemodeltest.cpp b/tests/units/presentation/tagpagemodeltest.cpp
--- a/tests/units/presentation/tagpagemodeltest.cpp
+++ b/tests/units/presentation/tagpagemodeltest.cpp
@@ -45,7 +45,7 @@
 class FakeErrorHandler : public Presentation::ErrorHandler
 {
 public:
-    void doDisplayMessage(const QString &message)
+    void doDisplayMessage(const QString &message) override
     {
         m_message = message;
     }
diff --git a/tests/units/presentation/taskinboxpagemodeltest.cpp b/tests/units/presentation/taskinboxpagemodeltest.cpp
--- a/tests/units/presentation/taskinboxpagemodeltest.cpp
+++ b/tests/units/presentation/taskinboxpagemodeltest.cpp
@@ -43,7 +43,7 @@
 class FakeErrorHandler : public Presentation::ErrorHandler
 {
 public:
-    void doDisplayMessage(const QString &message)
+    void doDisplayMessage(const QString &message) override
     {
         m_message = message;
     }
diff --git a/tests/units/utils/dependencymanagertest.cpp b/tests/units/utils/dependencymanagertest.cpp
--- a/tests/units/utils/dependencymanagertest.cpp
+++ b/tests/units/utils/dependencymanagertest.cpp
@@ -40,13 +40,13 @@
 class FirstImplementation0 : public Interface0
 {
 public:
-    virtual void doSomething() { qDebug() << "FirstImplementation"; }
+    void doSomething() override { qDebug() << "FirstImplementation"; }
 };
 
 class SecondImplementation0 : public Interface0
 {
 public:
-    virtual void doSomething() { qDebug() << "SecondImplementation"; }
+    void doSomething() override { qDebug() << "SecondImplementation"; }
 };
 
 #define DECLARE_IMPLEMENTED_INTERFACE(N) \
@@ -63,7 +63,7 @@
 class Implementation##N : public Interface##N \
 { \
 public: \
-    virtual void doSomething() { qDebug() << "Implementation##N"; } \
+    void doSomething() override { qDebug() << "Implementation##N"; } \
 };
 
 DECLARE_IMPLEMENTED_INTERFACE(1)
diff --git a/tests/units/widgets/applicationcomponentstest.cpp b/tests/units/widgets/applicationcomponentstest.cpp
--- a/tests/units/widgets/applicationcomponentstest.cpp
+++ b/tests/units/widgets/applicationcomponentstest.cpp
@@ -53,7 +53,7 @@
 {
     Q_OBJECT
 
-    QMimeData *mimeData(const QModelIndexList &indexes) const
+    QMimeData *mimeData(const QModelIndexList &indexes) const override
     {
         QStringList dataString;
         std::transform(indexes.begin(), indexes.end(),
@@ -69,7 +69,7 @@
         return data;
     }
 
-    bool dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &destination)
+    bool dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &destination) override
     {
         Q_UNUSED(action);