diff --git a/ChangeLog b/ChangeLog
index 1fdc290dbb..6f859813af 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2007-04-05  Wim Taymans  <wim@fluendo.com>
+
+	* gst-libs/gst/audio/gstbaseaudiosink.c:
+	(gst_base_audio_sink_skew_slaving):
+	Don't try to create invalid calibration parameters by making the
+	internal time go backwards, instead make external time go forward.
+
 2007-04-05  Wim Taymans  <wim@fluendo.com>
 
 	Patch by: Tommi Myöhänen <ext-tommi dot myohanen at nokia dot com>
diff --git a/gst-libs/gst/audio/gstbaseaudiosink.c b/gst-libs/gst/audio/gstbaseaudiosink.c
index adacbbc85a..a01666ef10 100644
--- a/gst-libs/gst/audio/gstbaseaudiosink.c
+++ b/gst-libs/gst/audio/gstbaseaudiosink.c
@@ -787,7 +787,7 @@ gst_base_audio_sink_skew_slaving (GstBaseAudioSink * sink,
 
   /* adjust playout pointer based on skew */
   if (sink->priv->avg_skew > segtime) {
-    /* master is running slower */
+    /* master is running slower, move internal time forward */
     GST_WARNING_OBJECT (sink,
         "correct clock skew %" G_GINT64_FORMAT " > %" G_GINT64_FORMAT,
         sink->priv->avg_skew, segtime);
@@ -797,11 +797,11 @@ gst_base_audio_sink_skew_slaving (GstBaseAudioSink * sink,
     gst_clock_set_calibration (sink->provided_clock, cinternal, cexternal,
         crate_num, crate_denom);
   } else if (sink->priv->avg_skew < -segtime) {
-    /* master is running faster */
+    /* master is running faster, move external time forwards */
     GST_WARNING_OBJECT (sink,
         "correct clock skew %" G_GINT64_FORMAT " < %" G_GINT64_FORMAT,
         sink->priv->avg_skew, -segtime);
-    cinternal -= segtime;
+    cexternal += segtime;
     sink->priv->avg_skew += segtime;
     sink->next_sample = -1;
     gst_clock_set_calibration (sink->provided_clock, cinternal, cexternal,