diff -p -up libproxy-0.2.3/src/bin/proxy.c~ libproxy-0.2.3/src/bin/proxy.c
--- libproxy-0.2.3/src/bin/proxy.c~	2008-06-05 22:56:15.000000000 +0200
+++ libproxy-0.2.3/src/bin/proxy.c	2009-02-02 23:19:47.000000000 +0100
@@ -84,7 +84,7 @@ main(int argc, char **argv)
 		char **proxies = px_proxy_factory_get_proxies(pf, url);
 		for (int i = 0 ; proxies[i] ; i++)
 		{
-			printf(proxies[i]);
+		  printf("%s", proxies[i]);
 			if (proxies[i+1])
 				printf(" ");
 			else