diff --git a/wol.c b/wol.c
index 9e40089..aa574c8 100644
--- a/wol.c
+++ b/wol.c
@@ -18,9 +18,9 @@ xdigit (char c)
 	if (c >= '0' && c <= '9')
 		return (c - '0');
 	else if (c >= 'A' && c <= 'F')
-		return (c - 'A');
+		return (10 + c - 'A');
 	else if (c >= 'a' && c <= 'f')
-		return (c - 'a');
+		return (10 + c - 'a');
 	return -1;
 }
 
@@ -73,6 +73,9 @@ wake_on_lan(const char *mac_address) {
 	if (setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &(int){1}, sizeof(int)) < 0)
 		err(1, "%s", "setsockopt");
 
+	printf("Sending to %02x:%02x:%02x:%02x:%02x:%02x\n",
+		mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
+
 	for (int i = 0; i < MAX_TRIES; ++i)
 		if (sendto(sock, payload, sizeof(payload), 0, (struct sockaddr*)&sa, sizeof(sa)) < 0)
 			err(1, "sendto");