--- ipset-4.2/ipset.h~	2009-11-10 22:45:12.000000000 +0200
+++ ipset-4.2/ipset.h	2010-07-21 08:14:25.783555041 +0300
@@ -116,7 +116,7 @@
 	u_int32_t adt_size;
 
 	/* Function which parses command options */
-	ip_set_ip_t (*adt_parser) (int cmd, const char *optarg, void *data);
+	ip_set_ip_t (*adt_parser) (int cmd, const char *optarg_, void *data);
 
 	/*
 	 * Printing