diff --git a/gst-libs/gst/video/video-converter.c b/gst-libs/gst/video/video-converter.c
index 4d05852653..c49c265b87 100644
--- a/gst-libs/gst/video/video-converter.c
+++ b/gst-libs/gst/video/video-converter.c
@@ -374,11 +374,6 @@ gst_line_cache_alloc_line (GstLineCache * cache, gint idx)
   return res;
 }
 
-/* Custom backup functions for ORC */
-void _custom_video_orc_matrix8 (guint8 * ORC_RESTRICT d1,
-    const guint8 * ORC_RESTRICT s1, orc_int64 p1, orc_int64 p2, orc_int64 p3,
-    orc_int64 p4, int n);
-
 static void video_converter_generic (GstVideoConverter * convert,
     const GstVideoFrame * src, GstVideoFrame * dest);
 static gboolean video_converter_lookup_fastpath (GstVideoConverter * convert);