diff --git a/gtk/src/gtk_opengl_context.h b/gtk/src/gtk_opengl_context.h
index 6635b9a5..6a1da3c0 100644
--- a/gtk/src/gtk_opengl_context.h
+++ b/gtk/src/gtk_opengl_context.h
@@ -12,6 +12,7 @@
 class OpenGLContext
 {
   public:
+    virtual ~OpenGLContext () {};
     virtual bool attach (GtkWidget *widget) = 0;
     virtual bool create_context () = 0;
     virtual void resize () = 0;