Index: /trunk/src/VBox/Additions/x11/VBoxClient/seamless-x11.h
===================================================================
--- /trunk/src/VBox/Additions/x11/VBoxClient/seamless-x11.h	(revision 50375)
+++ /trunk/src/VBox/Additions/x11/VBoxClient/seamless-x11.h	(revision 50376)
@@ -42,4 +42,5 @@
 public:
     virtual void sendRegionUpdate(RTRECT *pRects, size_t cRects) = 0;
+    virtual ~SeamlessHostProxy() {}
 };
 
Index: /trunk/src/VBox/Additions/x11/VBoxClient/seamless.h
===================================================================
--- /trunk/src/VBox/Additions/x11/VBoxClient/seamless.h	(revision 50375)
+++ /trunk/src/VBox/Additions/x11/VBoxClient/seamless.h	(revision 50376)
@@ -86,5 +86,5 @@
 public:
     SeamlessMain(void);
-    ~SeamlessMain();
+    virtual ~SeamlessMain();
 
     /**