--- common/phones/atgen.c.orig	2007-10-13 13:19:48.000000000 +1000
+++ common/phones/atgen.c	2007-10-13 13:20:51.000000000 +1000
@@ -836,7 +836,7 @@
 			       data->phonebook_entry->number,
 			       data->phonebook_entry->number[0] == '+' ? "145" : "129");
 		tmp = req + ofs;
-		len = at_encode(drvinst->charset, tmp, sizeof(req - ofs),
+		len = at_encode(drvinst->charset, tmp, sizeof(req) - ofs,
 				data->phonebook_entry->name,
 				strlen(data->phonebook_entry->name));
 		tmp[len-1] = '"';