diff --git a/server/tcp_server.c b/server/tcp_server.c
index 6ae1dbe6..65a72e1b 100644
--- a/server/tcp_server.c
+++ b/server/tcp_server.c
@@ -225,8 +225,8 @@ run_tcp_server(fko_srv_options_t *opts)
 
         if(opts->verbose)
         {
-            memset(sipbuf, 0x0, MAX_IPV4_STR_LEN);
-            inet_ntop(AF_INET, &(caddr.sin_addr.s_addr), sipbuf, MAX_IPV4_STR_LEN);
+            memset(sipbuf, 0x0, sizeof(sipbuf));
+            inet_ntop(AF_INET, &(caddr.sin_addr.s_addr), sipbuf, sizeof(sipbuf));
             log_msg(LOG_INFO, "tcp_server: Got TCP connection from %s.", sipbuf);
         }