diff --git a/include/ignition/gazebo/gui/GuiEvents.hh b/include/ignition/gazebo/gui/GuiEvents.hh
index 1b4df9c549..4407d68598 100644
--- a/include/ignition/gazebo/gui/GuiEvents.hh
+++ b/include/ignition/gazebo/gui/GuiEvents.hh
@@ -181,7 +181,7 @@ namespace events
   };
 
   /// \brief Event that notifies an entity is to be added to the model editor
-  class ModelEditorAddEntity : public QEvent
+  class IGNITION_GAZEBO_GUI_VISIBLE ModelEditorAddEntity : public QEvent
   {
     /// \brief Constructor
     /// \param[in] _entity Entity added