--- a/t/samples/b	Wed Jan 21 20:41:45 2015 +0100
+++ b/t/samples/b	Wed Jan 21 21:20:20 2015 +0100
@@ -1,7 +1,13 @@
 $ORIGIN km21.de.
 $TTL 1d
 ; do NOT EDIT the SOA records SERIAL number!
-@               SOA    pu.schlittermann.de. hostmaster.schlittermann.de. 1397766411 86400 7200 604800 300
+@               SOA    pu.schlittermann.de. hostmaster.schlittermann.de.  (
+		1397766411  ; serial
+		86400	    ; refresh
+		7200	    ; retry
+		604800	    ; expire
+		300	    ; min ttl
+		)
                 NS     hh.schlittermann.de.
                 NS     pu.schlittermann.de.
                 TXT    "invoice: self"