diff --git a/bin/ethdump/ethdump.c b/bin/ethdump/ethdump.c
index 7817da8..ec4767c 100644
--- a/bin/ethdump/ethdump.c
+++ b/bin/ethdump/ethdump.c
@@ -1,12 +1,14 @@
 
 #include <stdio.h>
+#include <stdlib.h>
+
 #include <errno.h>
 #include <syscall.h>
 #include <sys/nic.h>
 
 #include <net/ethernet.h>
 
-static int nicNo = 1;
+static int nicNo = 0;
 static char buf[4096];
 static MBuf mbuf;
 
@@ -61,6 +63,10 @@ main(int argc, const char *argv[])
 
     printf("Ethernet Dump Tool\n");
 
+    if (argc == 2) {
+	nicNo = atoi(argv[1]);
+    }
+
     status = OSNICStat(nicNo, &nic);
     if (status == ENOENT) {
 	printf("nic%d not present\n", nicNo);