diff --git a/ChangeLog b/ChangeLog
index a0bc74acc7..45268a8a36 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2008-07-12  Sebastian Dröge  <sebastian.droege@collabora.co.uk>
+
+	Patch by: tmatth <le dot businessman at gmail dot com>
+
+	* docs/pwg/building-testapp.xml:
+	Don't use an undeclared variable in the example program.
+	Fixes bug #542573.
+
 2008-07-12  Stefan Kost  <ensonic@users.sf.net>
 
 	* gst/gstdebugutils.c:
diff --git a/common b/common
index 79ade7b9c9..a100efef18 160000
--- a/common
+++ b/common
@@ -1 +1 @@
-Subproject commit 79ade7b9c9bf47eee491ceee4cf3ea116140ad35
+Subproject commit a100efef186a5f8999fe3aa42c0720f5123c08eb
diff --git a/docs/pwg/building-testapp.xml b/docs/pwg/building-testapp.xml
index 69dbf304cf..0869602a39 100644
--- a/docs/pwg/building-testapp.xml
+++ b/docs/pwg/building-testapp.xml
@@ -187,6 +187,8 @@ main (gint   argc,
   /* run */
   ret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
   if (ret == GST_STATE_CHANGE_FAILURE) {
+    GstMessage *msg;
+
     g_print ("Failed to start up pipeline!\n");
 
     /* check if there is an error message with details on the bus */