diff --git a/ktnef/src/ktnefview.h b/ktnef/src/ktnefview.h
index e808ff7d6..95bd383a2 100644
--- a/ktnef/src/ktnefview.h
+++ b/ktnef/src/ktnefview.h
@@ -30,7 +30,7 @@ class KTNEFView : public QTreeWidget
 
 public:
     explicit KTNEFView(QWidget *parent = nullptr);
-    ~KTNEFView();
+    ~KTNEFView() override;
 
     void setAttachments(const QList<KTNEFAttach *> &list);
     QList<KTNEFAttach *> getSelection();
diff --git a/src/configuredialog/configuredialog_p.h b/src/configuredialog/configuredialog_p.h
index c85757607..1609c4339 100644
--- a/src/configuredialog/configuredialog_p.h
+++ b/src/configuredialog/configuredialog_p.h
@@ -67,7 +67,7 @@ class KMAIL_EXPORT ConfigModuleWithTabs : public ConfigModule
     Q_OBJECT
 public:
     explicit ConfigModuleWithTabs(QWidget *parent = nullptr);
-    ~ConfigModuleWithTabs()
+    ~ConfigModuleWithTabs() override
     {
     }
 
diff --git a/src/identity/identitylistview.h b/src/identity/identitylistview.h
index e734c3ca3..d76b6fb4d 100644
--- a/src/identity/identitylistview.h
+++ b/src/identity/identitylistview.h
@@ -72,7 +72,7 @@ class IdentityListView : public QTreeWidget
     Q_OBJECT
 public:
     explicit IdentityListView(QWidget *parent = nullptr);
-    virtual ~IdentityListView()
+    ~IdentityListView() override
     {
     }