diff -ur libproxy-0.2.3/src/plugins/networkmanager.c libproxy-0.2.3.patched/src/plugins/networkmanager.c
--- libproxy-0.2.3/src/plugins/networkmanager.c	2008-12-19 13:24:08.000000000 +0100
+++ libproxy-0.2.3.patched/src/plugins/networkmanager.c	2008-12-19 13:22:56.000000000 +0100
@@ -84,7 +84,7 @@
 bool
 on_proxy_factory_instantiate(pxProxyFactory *self)
 {
-	px_proxy_factory_on_get_proxy_add(self, nm_on_get_proxy);
+	return px_proxy_factory_on_get_proxy_add(self, nm_on_get_proxy);
 }
 
 void