diff --git a/ChangeLog b/ChangeLog
index 92dea4d12a..c5b3a8b7a2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2004-03-15  Thomas Vander Stichele  <thomas at apestaart dot org>
+
+	* gst/gstcaps.h:
+	* gst/gststructure.h:
+          add reserved padding
+
 2004-03-15  Benjamin Otte  <otte@gnome.org>
 
 	* gst/elements/gstfdsrc.c: (gst_fdsrc_get):
diff --git a/gst/gstcaps.h b/gst/gstcaps.h
index 65f4e71ccf..e64b6106aa 100644
--- a/gst/gstcaps.h
+++ b/gst/gstcaps.h
@@ -59,11 +59,14 @@ struct _GstCaps {
 
   guint16 flags;
   GPtrArray *structs;
+
+  gpointer _gst_reserved[GST_PADDING];
 };
 
 struct _GstStaticCaps {
   GstCaps caps;
   const char *string;
+  gpointer _gst_reserved[GST_PADDING];
 };
 
 GType                    gst_caps_get_type                              (void) G_GNUC_CONST;
diff --git a/gst/gststructure.h b/gst/gststructure.h
index 99eb0ae6b1..eeeb00b284 100644
--- a/gst/gststructure.h
+++ b/gst/gststructure.h
@@ -41,6 +41,8 @@ struct _GstStructure {
   GQuark name;
 
   GArray *fields;
+
+  gpointer _gst_reserved[GST_PADDING];
 };
 
 GType                   gst_structure_get_type             (void) G_GNUC_CONST;