diff --git a/rviz_common/include/rviz_common/window_manager_interface.hpp b/rviz_common/include/rviz_common/window_manager_interface.hpp
index f9c18d40d..d4cf4d3ec 100644
--- a/rviz_common/include/rviz_common/window_manager_interface.hpp
+++ b/rviz_common/include/rviz_common/window_manager_interface.hpp
@@ -49,6 +49,8 @@ class PanelDockWidget;
 class WindowManagerInterface
 {
 public:
+  virtual ~WindowManagerInterface() = default;
+
   /// Return the parent QWidget.
   virtual
   QWidget *
diff --git a/rviz_rendering/include/rviz_rendering/viewport_projection_finder.hpp b/rviz_rendering/include/rviz_rendering/viewport_projection_finder.hpp
index 0dfa8bf74..02a3863f7 100644
--- a/rviz_rendering/include/rviz_rendering/viewport_projection_finder.hpp
+++ b/rviz_rendering/include/rviz_rendering/viewport_projection_finder.hpp
@@ -52,6 +52,7 @@ class RVIZ_RENDERING_PUBLIC ViewportProjectionFinder
 {
 public:
   ViewportProjectionFinder() = default;
+  virtual ~ViewportProjectionFinder() = default;
 
   virtual std::pair<bool, Ogre::Vector3> getViewportPointProjectionOnXYPlane(
     RenderWindow * render_window, int x, int y);