diff --git a/src/core/operationrunner.h b/src/core/operationrunner.h
index f91468d..d22dfe2 100644
--- a/src/core/operationrunner.h
+++ b/src/core/operationrunner.h
@@ -44,7 +44,7 @@ public:
     OperationRunner(QObject* parent, OperationStack& ostack);
 
 public:
-    void run();
+    void run() override;
     qint32 numJobs() const;
     qint32 numOperations() const;
     qint32 numProgressSub() const;
diff --git a/src/gui/partresizerwidget.h b/src/gui/partresizerwidget.h
index 7265ae6..929223b 100644
--- a/src/gui/partresizerwidget.h
+++ b/src/gui/partresizerwidget.h
@@ -142,11 +142,11 @@ protected:
         m_Device = &d;
     }
 
-    void paintEvent(QPaintEvent* event);
-    void resizeEvent(QResizeEvent* event);
-    void mousePressEvent(QMouseEvent* event);
-    void mouseMoveEvent(QMouseEvent* event);
-    void mouseReleaseEvent(QMouseEvent* event);
+    void paintEvent(QPaintEvent* event) override;
+    void resizeEvent(QResizeEvent* event) override;
+    void mousePressEvent(QMouseEvent* event) override;
+    void mouseMoveEvent(QMouseEvent* event) override;
+    void mouseReleaseEvent(QMouseEvent* event) override;
 
     PartWidget& partWidget() {
         Q_ASSERT(m_PartWidget);
diff --git a/src/gui/partwidget.h b/src/gui/partwidget.h
index 8275483..dde4500 100644
--- a/src/gui/partwidget.h
+++ b/src/gui/partwidget.h
@@ -64,8 +64,8 @@ public:
     void setFileSystemColorCode( const std::vector<QColor>& colorCode );
 
 protected:
-    void paintEvent(QPaintEvent* event);
-    void resizeEvent(QResizeEvent* event);
+    void paintEvent(QPaintEvent* event) override;
+    void resizeEvent(QResizeEvent* event) override;
 
     QColor activeColor(const QColor& col) const;
 
diff --git a/test/testexternalcommand.cpp b/test/testexternalcommand.cpp
index aec3d31..a8d48f9 100644
--- a/test/testexternalcommand.cpp
+++ b/test/testexternalcommand.cpp
@@ -29,7 +29,7 @@
 class runcmd : public QThread {
 public:
 
-void run()
+void run() override
 {
     ExternalCommand blkidCmd(QStringLiteral("blkid"), {});
     blkidCmd.run();
@@ -41,7 +41,7 @@ void run()
 class runcmd2 : public QThread {
 public:
 
-void run()
+void run() override
 {
     ExternalCommand lsblkCmd(QStringLiteral("lsblk"), { QStringLiteral("--nodeps"), QStringLiteral("--json") });
     lsblkCmd.run();