diff --git a/ChangeLog b/ChangeLog
index 4e3cba898e..1945dcddda 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2007-05-15  Stefan Kost  <ensonic@users.sf.net>
+
+	* gst/debug/breakmydata.c: (gst_break_my_data_class_init),
+	(gst_break_my_data_init):
+	  Fix gst_buffer_is_writable() assertion.
+
 2007-05-14  David Schleef  <ds@schleef.org>
 
 	* sys/v4l2/gstv4l2src.c: Add support for Bayer images as
diff --git a/gst/debug/breakmydata.c b/gst/debug/breakmydata.c
index 252ee39ab5..d2a94d89b3 100644
--- a/gst/debug/breakmydata.c
+++ b/gst/debug/breakmydata.c
@@ -27,7 +27,7 @@
 GST_DEBUG_CATEGORY_STATIC (gst_break_my_data_debug);
 #define GST_CAT_DEFAULT gst_break_my_data_debug
 
-/* This plugin modifies the contents of the buffer it is passed randomly 
+/* This plugin modifies the contents of the buffer it is passed randomly
  * according to the parameters set.
  * It otherwise acts as an identity.
  */
@@ -149,13 +149,14 @@ gst_break_my_data_class_init (GstBreakMyDataClass * klass)
       GST_DEBUG_FUNCPTR (gst_break_my_data_transform_ip);
   gstbasetrans_class->start = GST_DEBUG_FUNCPTR (gst_break_my_data_start);
   gstbasetrans_class->stop = GST_DEBUG_FUNCPTR (gst_break_my_data_stop);
-  gstbasetrans_class->passthrough_on_same_caps = TRUE;
+  //gstbasetrans_class->passthrough_on_same_caps = TRUE;
 }
 
 static void
 gst_break_my_data_init (GstBreakMyData * bmd, GstBreakMyDataClass * g_class)
 {
-  gst_base_transform_set_in_place (GST_BASE_TRANSFORM (bmd), TRUE);
+  gst_base_transform_set_in_place (GST_BASE_TRANSFORM (bmd), FALSE);
+  gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (bmd), TRUE);
 }
 
 static void