diff --git a/src/lib/downloads/downloadmanagermodel.h b/src/lib/downloads/downloadmanagermodel.h
index c6b1c65ea..fdc9a72ab 100644
--- a/src/lib/downloads/downloadmanagermodel.h
+++ b/src/lib/downloads/downloadmanagermodel.h
@@ -27,8 +27,8 @@ class DownloadManagerModel : public QAbstractListModel
 
 public:
     DownloadManagerModel(QObject *parent = nullptr);
-    int rowCount(const QModelIndex &parent) const;
-    QVariant data(const QModelIndex &index, int role) const;
+    int rowCount(const QModelIndex &parent) const override;
+    QVariant data(const QModelIndex &index, int role) const override;
     void addDownload(DownloadItem *item);
     void removeDownload(DownloadItem *item);
     int count() const;
diff --git a/src/plugins/GnomeKeyringPasswords/gnomekeyringpasswordbackend.h b/src/plugins/GnomeKeyringPasswords/gnomekeyringpasswordbackend.h
index 68a1c81f1..494a3e8ec 100644
--- a/src/plugins/GnomeKeyringPasswords/gnomekeyringpasswordbackend.h
+++ b/src/plugins/GnomeKeyringPasswords/gnomekeyringpasswordbackend.h
@@ -28,17 +28,17 @@ class FALKON_EXPORT GnomeKeyringPasswordBackend : public PasswordBackend
 public:
     explicit GnomeKeyringPasswordBackend();
 
-    QString name() const;
+    QString name() const override;
 
-    QVector<PasswordEntry> getEntries(const QUrl &url);
-    QVector<PasswordEntry> getAllEntries();
+    QVector<PasswordEntry> getEntries(const QUrl &url) override;
+    QVector<PasswordEntry> getAllEntries() override;
 
-    void addEntry(const PasswordEntry &entry);
-    bool updateEntry(const PasswordEntry &entry);
-    void updateLastUsed(PasswordEntry &entry);
+    void addEntry(const PasswordEntry &entry) override;
+    bool updateEntry(const PasswordEntry &entry) override;
+    void updateLastUsed(PasswordEntry &entry) override;
 
-    void removeEntry(const PasswordEntry &entry);
-    void removeAll();
+    void removeEntry(const PasswordEntry &entry) override;
+    void removeAll() override;
 
 private:
     void initialize();
diff --git a/src/plugins/GnomeKeyringPasswords/gnomekeyringplugin.h b/src/plugins/GnomeKeyringPasswords/gnomekeyringplugin.h
index 9e6dab686..184982b19 100644
--- a/src/plugins/GnomeKeyringPasswords/gnomekeyringplugin.h
+++ b/src/plugins/GnomeKeyringPasswords/gnomekeyringplugin.h
@@ -31,9 +31,9 @@ class GnomeKeyringPlugin : public QObject, public PluginInterface
 public:
     explicit GnomeKeyringPlugin();
 
-    void init(InitState state, const QString &settingsPath);
-    void unload();
-    bool testPlugin();
+    void init(InitState state, const QString &settingsPath) override;
+    void unload() override;
+    bool testPlugin() override;
 
 private:
     GnomeKeyringPasswordBackend* m_backend;
diff --git a/src/plugins/KDEFrameworksIntegration/downloadkjob.h b/src/plugins/KDEFrameworksIntegration/downloadkjob.h
index cce06ec89..2c2c04055 100644
--- a/src/plugins/KDEFrameworksIntegration/downloadkjob.h
+++ b/src/plugins/KDEFrameworksIntegration/downloadkjob.h
@@ -28,7 +28,7 @@ class FALKON_EXPORT DownloadKJob : public KJob
 
 public:
     DownloadKJob(const QUrl &url, const QString &path, const QString &fileName, QObject *parent = nullptr);
-    void start();
+    void start() override;
     void updateDescription();
 
 public Q_SLOTS: