diff --git a/ChangeLog b/ChangeLog
index f80cc0b20..c0dc53183 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2008-04-03  Emmanuele Bassi  <ebassi@openedhand.com>
+
+	* clutter/clutter-alpha.c: ClutterAlpha is an InitiallyUnowned
+	subclass. This should fix a lot of leakage. (#860, Neil Roberts)
+
 2008-04-03  Emmanuele Bassi  <ebassi@openedhand.com>
 
 	* clutter/glx/clutter-backend-glx.c:
diff --git a/clutter/clutter-alpha.c b/clutter/clutter-alpha.c
index 86f55c778..9ff4b7a3c 100644
--- a/clutter/clutter-alpha.c
+++ b/clutter/clutter-alpha.c
@@ -63,7 +63,7 @@
 #include "clutter-private.h"
 #include "clutter-debug.h"
 
-G_DEFINE_TYPE (ClutterAlpha, clutter_alpha, G_TYPE_OBJECT);
+G_DEFINE_TYPE (ClutterAlpha, clutter_alpha, G_TYPE_INITIALLY_UNOWNED);
 
 
 struct _ClutterAlphaPrivate