--- a/src/discover_dispatch.c
+++ b/src/discover_dispatch.c
@@ -81,7 +81,6 @@
 
 unsigned short ip_tcp_sync_chksum;
 unsigned short ip_tcp_fp_chksum;
-struct sockaddr_in ip_tcp_sync_addr;
 static dispatch_func_recv_t dispatch_funcs[] = {
 	dis_recvdummy,
 	dis_recv,
--- a/src/discover_main.c
+++ b/src/discover_main.c
@@ -22,7 +22,6 @@
 extern struct _opt opt;
 extern char ip_tcp_sync[];
 
-struct sockaddr_in ip_tcp_sync_addr;
 int rawsox;
 
 #define DFL_HOSTS_PARALLEL	(5000)