diff --git a/gst-libs/gst/pbutils/descriptions.c b/gst-libs/gst/pbutils/descriptions.c
index 6960d8cc3d..bc2b2f3900 100644
--- a/gst-libs/gst/pbutils/descriptions.c
+++ b/gst-libs/gst/pbutils/descriptions.c
@@ -132,6 +132,7 @@ static const FormatInfo formats[] = {
   {"audio/x-nellymoser", "Nellymoser Asao", 0},
   {"audio/x-nist", "Sphere NIST", 0},
   {"audio/x-nsf", "Nintendo NSF", 0},
+  {"audio/x-opus", "Opus", 0},
   {"audio/x-paris", "Ensoniq PARIS", 0},
   {"audio/x-qdm", "QDesign Music (QDM)", 0},
   {"audio/x-qdm2", "QDesign Music (QDM) 2", 0},