diff --git a/ext/vp8/gstvp8enc.c b/ext/vp8/gstvp8enc.c
index b705102..7e1463a 100644
--- a/ext/vp8/gstvp8enc.c
+++ b/ext/vp8/gstvp8enc.c
@@ -229,7 +229,7 @@ gst_vp8_enc_class_init (GstVP8EncClass * klass)
 
   g_object_class_install_property (gobject_class, PROP_BITRATE,
       g_param_spec_int ("bitrate", "Bit rate",
-          "Bit rate",
+          "Bit rate (bit/sec)",
           0, 1000000000, DEFAULT_BITRATE,
           (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
 
