diff --git a/ext/lame/gstlame.c b/ext/lame/gstlame.c
index d91f27fde5..ce85ad2709 100644
--- a/ext/lame/gstlame.c
+++ b/ext/lame/gstlame.c
@@ -65,7 +65,7 @@ GST_PAD_TEMPLATE_FACTORY (gst_lame_src_factory,
   GST_PAD_ALWAYS,
   GST_CAPS_NEW (
     "gstlame_src",
-    "audio/mp3",
+    "audio/x-mp3",
     NULL
   )
 )