diff --git a/src/libs/aggregation/aggregate.h b/src/libs/aggregation/aggregate.h
index a60faed6c53..13881d85d81 100644
--- a/src/libs/aggregation/aggregate.h
+++ b/src/libs/aggregation/aggregate.h
@@ -41,7 +41,7 @@ class AGGREGATION_EXPORT Aggregate : public QObject
 
 public:
     Aggregate(QObject *parent = 0);
-    virtual ~Aggregate();
+    ~Aggregate() override;
 
     void add(QObject *component);
     void remove(QObject *component);
diff --git a/src/libs/extensionsystem/iplugin.h b/src/libs/extensionsystem/iplugin.h
index dd1372130e3..f95d7a2b283 100644
--- a/src/libs/extensionsystem/iplugin.h
+++ b/src/libs/extensionsystem/iplugin.h
@@ -51,7 +51,7 @@ public:
     };
 
     IPlugin();
-    virtual ~IPlugin();
+    ~IPlugin() override;
 
     virtual bool initialize(const QStringList &arguments, QString *errorString) = 0;
     virtual void extensionsInitialized() = 0;
diff --git a/src/libs/extensionsystem/plugindetailsview.h b/src/libs/extensionsystem/plugindetailsview.h
index b6990e29600..3cbcc4660e8 100644
--- a/src/libs/extensionsystem/plugindetailsview.h
+++ b/src/libs/extensionsystem/plugindetailsview.h
@@ -44,7 +44,7 @@ class EXTENSIONSYSTEM_EXPORT PluginDetailsView : public QWidget
 
 public:
     PluginDetailsView(QWidget *parent = 0);
-    ~PluginDetailsView();
+    ~PluginDetailsView() override;
 
     void update(PluginSpec *spec);
 
diff --git a/src/libs/extensionsystem/pluginerroroverview.h b/src/libs/extensionsystem/pluginerroroverview.h
index 2e9a6c21efe..4f971c0a3d6 100644
--- a/src/libs/extensionsystem/pluginerroroverview.h
+++ b/src/libs/extensionsystem/pluginerroroverview.h
@@ -45,7 +45,7 @@ class EXTENSIONSYSTEM_EXPORT PluginErrorOverview : public QDialog
 
 public:
     explicit PluginErrorOverview(QWidget *parent = 0);
-    ~PluginErrorOverview();
+    ~PluginErrorOverview() override;
 
 private:
     void showDetails(QListWidgetItem *item);
diff --git a/src/libs/extensionsystem/pluginerrorview.h b/src/libs/extensionsystem/pluginerrorview.h
index 1655f4adcf9..cf8ba7de4ac 100644
--- a/src/libs/extensionsystem/pluginerrorview.h
+++ b/src/libs/extensionsystem/pluginerrorview.h
@@ -42,7 +42,7 @@ class EXTENSIONSYSTEM_EXPORT PluginErrorView : public QWidget
 
 public:
     PluginErrorView(QWidget *parent = 0);
-    ~PluginErrorView();
+    ~PluginErrorView() override;
 
     void update(PluginSpec *spec);
 
diff --git a/src/libs/extensionsystem/pluginmanager.h b/src/libs/extensionsystem/pluginmanager.h
index 58585d9db20..7f96e1f96f7 100644
--- a/src/libs/extensionsystem/pluginmanager.h
+++ b/src/libs/extensionsystem/pluginmanager.h
@@ -50,7 +50,7 @@ public:
     static PluginManager *instance();
 
     PluginManager();
-    ~PluginManager();
+    ~PluginManager() override;
 
     // Object pool operations
     static void addObject(QObject *obj);
diff --git a/src/libs/extensionsystem/pluginview.h b/src/libs/extensionsystem/pluginview.h
index 33c48ba0b91..f7e24efd6a2 100644
--- a/src/libs/extensionsystem/pluginview.h
+++ b/src/libs/extensionsystem/pluginview.h
@@ -49,7 +49,7 @@ class EXTENSIONSYSTEM_EXPORT PluginView : public QWidget
 
 public:
     explicit PluginView(QWidget *parent = 0);
-    ~PluginView();
+    ~PluginView() override;
 
     PluginSpec *currentPlugin() const;
     void setFilter(const QString &filter);