diff -rN -u old-telepathy-glib/telepathy-glib/proxy.c new-telepathy-glib/telepathy-glib/proxy.c
--- old-telepathy-glib/telepathy-glib/proxy.c	2007-12-07 13:59:22.000000000 +0100
+++ new-telepathy-glib/telepathy-glib/proxy.c	2007-12-07 13:59:22.000000000 +0100
@@ -292,6 +292,7 @@
   g_return_if_fail (self->priv == pending_call_magic);
   g_return_if_fail (dead == self->weak_object);
 
+  self->weak_object = NULL;
   tp_proxy_pending_call_cancel (self);
 }
 
@@ -403,6 +404,7 @@
   g_return_if_fail (self->priv == signal_conn_magic);
   g_return_if_fail (dead == self->weak_object);
 
+  self->weak_object = NULL;
   tp_proxy_signal_connection_disconnect (self);
 }