diff --git a/ChangeLog b/ChangeLog
index 4a109a68d0..22cdc6cbdb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2007-07-21  Jan Schmidt  <thaytan@noraisin.net>
+
+	* gst-libs/gst/interfaces/mixer.h:
+	Add padding vars in place of the signal pointers
+	when building with DISABLE_DEPRECATED so that the
+	interface structure doesn't change size.
+
 2007-07-20  Jan Schmidt  <thaytan@noraisin.net>
 
 	* docs/libs/gst-plugins-base-libs-sections.txt:
diff --git a/gst-libs/gst/interfaces/mixer.h b/gst-libs/gst/interfaces/mixer.h
index 7bc77b25c9..cfb605c4a5 100644
--- a/gst-libs/gst/interfaces/mixer.h
+++ b/gst-libs/gst/interfaces/mixer.h
@@ -123,6 +123,8 @@ struct _GstMixerClass {
   void (* volume_changed) (GstMixer      *mixer,
                            GstMixerTrack *channel,
                            gint          *volumes);
+#else
+  gpointer padding1[3];
 #endif /* not GST_DISABLE_DEPRECATED */
 
   void          (* set_option)     (GstMixer      *mixer,
@@ -135,6 +137,8 @@ struct _GstMixerClass {
   void (* option_changed) (GstMixer      *mixer,
                            GstMixerOptions *opts,
                            gchar   *option);
+#else
+  gpointer padding2;
 #endif /* not GST_DISABLE_DEPRECATED */
 
   GstMixerFlags (* get_mixer_flags) (GstMixer *mixer);