diff --git a/src/src/Interaction/ActorDraggableInteractorStyle.cpp b/src/src/Interaction/ActorDraggableInteractorStyle.cpp
index d7b966e..706c2ed 100644
--- a/src/src/Interaction/ActorDraggableInteractorStyle.cpp
+++ b/src/src/Interaction/ActorDraggableInteractorStyle.cpp
@@ -25,7 +25,9 @@
 
 vtkStandardNewMacro(ActorDraggableInteractorStyle)
 
-ActorDraggableInteractorStyle::ActorDraggableInteractorStyle() {
+ActorDraggableInteractorStyle::ActorDraggableInteractorStyle():vtkInteractorStyleImage()
+{
+    HandleObservers = true;
     this->AddObserver(vtkCommand::InteractionEvent, this, &ActorDraggableInteractorStyle::DispatchEvent);
 }