Index: dnstracer.c
--- dnstracer.c.orig
+++ dnstracer.c
@@ -1014,8 +1014,8 @@ display_arecords(void)
 
     arecord = arecords;
     while (arecord != NULL) {
-	printf("%s (%s)%n",
-	    arecord->server_name, arecord->server_ip, &i);
+	i = printf("%s (%s)",
+	    arecord->server_name, arecord->server_ip);
 	if (40 - i < 1)
 	    printf(" ");
 	else {