diff --git a/ext/qt/qtitem.cc b/ext/qt/qtitem.cc
index 8027c741ae..be604683bb 100644
--- a/ext/qt/qtitem.cc
+++ b/ext/qt/qtitem.cc
@@ -39,15 +39,12 @@
  * @short_description: a #GtkGLArea that renders GStreamer video #GstBuffers
  * @see_also: #GtkGLArea, #GstBuffer
  *
- * #QtGLVideoItem is an #GtkWidget that renders GStreamer video buffers.
+ * #QtGLVideoItem is an #QQuickItem that renders GStreamer video buffers.
  */
 
 #define GST_CAT_DEFAULT qt_item_debug
 GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
 
-#define GTK_GST_GL_WIDGET_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), \
-    GTK_TYPE_GST_GL_WIDGET, QtGLVideoItemPrivate))
-
 #define DEFAULT_FORCE_ASPECT_RATIO  TRUE
 #define DEFAULT_PAR_N               0
 #define DEFAULT_PAR_D               1