diff --git a/gst-libs/gst/video/gstvideoaggregator.h b/gst-libs/gst/video/gstvideoaggregator.h
index 3c74d1aa84..9882a75dfe 100644
--- a/gst-libs/gst/video/gstvideoaggregator.h
+++ b/gst-libs/gst/video/gstvideoaggregator.h
@@ -35,6 +35,7 @@ G_BEGIN_DECLS
 #define GST_TYPE_VIDEO_AGGREGATOR (gst_video_aggregator_get_type())
 #define GST_VIDEO_AGGREGATOR(obj) \
         (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_AGGREGATOR, GstVideoAggregator))
+#define GST_VIDEO_AGGREGATOR_CAST(obj) ((GstVideoAggregator *)(obj))
 #define GST_VIDEO_AGGREGATOR_CLASS(klass) \
         (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_AGGREGATOR, GstVideoAggregatorClass))
 #define GST_IS_VIDEO_AGGREGATOR(obj) \