diff --git a/dbus-1-glib.changes b/dbus-1-glib.changes
index e2fc0cd..d93a21c 100644
--- a/dbus-1-glib.changes
+++ b/dbus-1-glib.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon May 26 11:11:38 CEST 2008 - tambet@suse.de
+
+- Don't assert on unknown property access (bfo #16079). Without this patch,
+  any user can kill NetworkManager for example (bgo #534544).
+
 -------------------------------------------------------------------
 Tue May 13 21:54:50 CEST 2008 - aj@suse.de
 
diff --git a/dbus-1-glib.spec b/dbus-1-glib.spec
index 834fe48..6721bef 100644
--- a/dbus-1-glib.spec
+++ b/dbus-1-glib.spec
@@ -17,7 +17,7 @@ Url:            http://dbus.freedesktop.org/
 License:        GPL v2 or later; Other uncritical OpenSource License
 Group:          Development/Libraries/Other
 Version:        0.74
-Release:        81
+Release:        83
 AutoReqProv:    on
 Summary:        GLib-based library for using D-Bus
 Source0:        dbus-glib-%{version}.tar.gz
@@ -26,6 +26,7 @@ Patch1:         dbus-glib-gvalue-utils-fix-thoenig-01.patch
 Patch2:         dbus-glib-introspection-xml.patch
 Patch3:         dbus-glib-proxy-signals-once.patch
 Patch4:         dbus-glib-ignore-namespaces.patch
+Patch5:         dbus-glib-unknown-properties.patch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 Requires:       dbus-1 >= %( echo `rpm -q --queryformat '%{VERSION}-%{RELEASE}' dbus-1`)
 
@@ -124,6 +125,7 @@ Authors:
 %patch2 -p1
 %patch3 -p1
 %patch4 -p1
+%patch5 -p1
 
 %build
 autoreconf -fi
@@ -169,6 +171,9 @@ make DESTDIR=%{buildroot} install
 %{_datadir}/gtk-doc/html/dbus-glib/*
 
 %changelog
+* Mon May 26 2008 tambet@suse.de
+- Don't assert on unknown property access (bfo #16079). Without this patch,
+  any user can kill NetworkManager for example (bgo #534544).
 * Tue May 13 2008 aj@suse.de
 - Reduce BuildRequires.
 * Thu Apr 10 2008 ro@suse.de
diff --git a/dbus-glib-unknown-properties.patch b/dbus-glib-unknown-properties.patch
new file mode 100644
index 0000000..1cef19f
--- /dev/null
+++ b/dbus-glib-unknown-properties.patch
@@ -0,0 +1,17 @@
+Index: dbus-glib-0.74/dbus/dbus-gobject.c
+===================================================================
+--- dbus-glib-0.74.orig/dbus/dbus-gobject.c
++++ dbus-glib-0.74/dbus/dbus-gobject.c
+@@ -1531,6 +1531,12 @@ export_signals (DBusGConnection *connect
+                            dbus_g_signal_closure_finalize);
+           g_free (s);
+         }
++      else
++        {
++          ret = dbus_message_new_error_printf (message,
++                                               DBUS_ERROR_INVALID_ARGS,
++                                               "No such property %s", wincaps_propname);
++        }
+     }
+ }
+