diff --git a/subprojects/gst-plugins-base/tests/examples/gl/gtk/3dvideo/mviewwidget.c b/subprojects/gst-plugins-base/tests/examples/gl/gtk/3dvideo/mviewwidget.c
index 5b42a54081..0e4632099d 100644
--- a/subprojects/gst-plugins-base/tests/examples/gl/gtk/3dvideo/mviewwidget.c
+++ b/subprojects/gst-plugins-base/tests/examples/gl/gtk/3dvideo/mviewwidget.c
@@ -198,6 +198,8 @@ gst_mview_widget_constructed (GObject * o)
   GtkGrid *g = GTK_GRID (mv);
   GtkWidget *w;
 
+  G_OBJECT_CLASS (gst_mview_widget_parent_class)->constructed (o);
+
   gtk_widget_set_has_window (GTK_WIDGET (mv), FALSE);
 
   if (mv->is_output) {