diff --git a/plugins/sip/gst-rfc3551.c b/plugins/sip/gst-rfc3551.c
index 634c034..cd022b4 100644
--- a/plugins/sip/gst-rfc3551.c
+++ b/plugins/sip/gst-rfc3551.c
@@ -39,7 +39,13 @@ static MediaCodecInfo gst_codecs[] = {
 };
 
 
-static gboolean
+/**
+ * media_codec_available_in_gst:
+ * @codec: A #MediaCodecInfo
+ *
+ * Returns: %TRUE if codec is available on your system, %FALSE otherwise
+ */
+gboolean
 media_codec_available_in_gst (MediaCodecInfo *codec) {
   gboolean available = FALSE;
   GstRegistry *registry = gst_registry_get ();
diff --git a/plugins/sip/gst-rfc3551.h b/plugins/sip/gst-rfc3551.h
index 7b77ab6..8c53f15 100644
--- a/plugins/sip/gst-rfc3551.h
+++ b/plugins/sip/gst-rfc3551.h
@@ -44,6 +44,7 @@ typedef struct {
 } MediaCodecInfo;
 
 
+gboolean         media_codec_available_in_gst (MediaCodecInfo *codec);
 MediaCodecInfo*  media_codec_by_name (const char *name);
 MediaCodecInfo*  media_codec_by_payload_id (uint payload_id);
 gchar*           media_codec_get_gst_capabilities (MediaCodecInfo *codec);