diff --git a/ChangeLog b/ChangeLog
index 9be3344b02..9c636ea092 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2008-01-29  Sebastian Dröge  <slomo@circular-chaos.org>
+
+	* gst-libs/gst/audio/gstaudiofilter.c:
+	(gst_audio_filter_class_init):
+	Initialize the GstRingerBuffer class to get it's debug category
+	initialized. gst_ring_buffer_parse_caps() uses the ringbuffer debug
+	category and otherwise we get some g_critical(). Fixes bug #512334.
+
 2008-01-28  Jan Schmidt  <jan.schmidt@sun.com>
 
 	* configure.ac:
diff --git a/gst-libs/gst/audio/gstaudiofilter.c b/gst-libs/gst/audio/gstaudiofilter.c
index 026c4f529a..f32e36cf24 100644
--- a/gst-libs/gst/audio/gstaudiofilter.c
+++ b/gst-libs/gst/audio/gstaudiofilter.c
@@ -105,6 +105,12 @@ gst_audio_filter_class_init (gpointer klass, gpointer class_data)
   basetrans_class->set_caps = GST_DEBUG_FUNCPTR (gst_audio_filter_set_caps);
   basetrans_class->get_unit_size =
       GST_DEBUG_FUNCPTR (gst_audio_filter_get_unit_size);
+
+  /* FIXME: Ref the GstRingerBuffer class to get it's debug category
+   * initialized. gst_ring_buffer_parse_caps () which we use later
+   * uses this debug category.
+   */
+  g_type_class_ref (GST_TYPE_RING_BUFFER);
 }
 
 static void