diff --git a/ApplicationLibCode/UserInterface/RiuSummaryPlot.h b/ApplicationLibCode/UserInterface/RiuSummaryPlot.h
index 4161b12fac..791c07aa96 100644
--- a/ApplicationLibCode/UserInterface/RiuSummaryPlot.h
+++ b/ApplicationLibCode/UserInterface/RiuSummaryPlot.h
@@ -37,7 +37,7 @@ class RiuSummaryPlot : public QObject
     Q_OBJECT
 public:
     RiuSummaryPlot( RimSummaryPlot* plot );
-    ~RiuSummaryPlot();
+    ~RiuSummaryPlot() override;
 
     virtual void useDateBasedTimeAxis(
         const QString&                          dateFormat,
diff --git a/ApplicationLibCode/UserInterface/RiuSummaryQwtPlot.h b/ApplicationLibCode/UserInterface/RiuSummaryQwtPlot.h
index 82aca42a1a..1e1a909005 100644
--- a/ApplicationLibCode/UserInterface/RiuSummaryQwtPlot.h
+++ b/ApplicationLibCode/UserInterface/RiuSummaryQwtPlot.h
@@ -45,7 +45,7 @@ class RiuSummaryQwtPlot : public RiuSummaryPlot
 
 public:
     RiuSummaryQwtPlot( RimSummaryPlot* plot, QWidget* parent = nullptr );
-    ~RiuSummaryQwtPlot();
+    ~RiuSummaryQwtPlot() override;
 
     void useDateBasedTimeAxis( const QString&                          dateFormat,
                                const QString&                          timeFormat,