diff --git a/src/RealtimeController.h b/src/RealtimeController.h
index 87fe96273..760b6241e 100644
--- a/src/RealtimeController.h
+++ b/src/RealtimeController.h
@@ -27,11 +27,11 @@
 
 class RealtimeController
 {
-
 public:
     RealtimeWindow *parent;                     // for push devices
 
     RealtimeController (RealtimeWindow *parent);
+    virtual ~RealtimeController() {}
 
     virtual int start();
     virtual int restart();                              // restart after paused