diff --git a/src/plugin.c b/src/plugin.c
index e75c3008..9c0c3281 100644
--- a/src/plugin.c
+++ b/src/plugin.c
@@ -308,7 +308,8 @@ get_local_port()
     }
 
     struct sockaddr_in serv_addr;
-    bzero((char *)&serv_addr, sizeof(serv_addr));
+    //bzero((char *)&serv_addr, sizeof(serv_addr)); /* replace bzero(3) to memset(3). which is more compatible to old systems */ 
+    memset(&serv_addr, 0, sizeof(serv_addr));
     serv_addr.sin_family      = AF_INET;
     serv_addr.sin_addr.s_addr = INADDR_ANY;
     serv_addr.sin_port        = 0;