[sheepdog] killproc: command not found

[Valerio Pachera]

Hi, I'm testing sheepdog on 3 mini servers with a fresh debian wheezy
installation (64bit).
I started sheepdog by /etc/init.d/sheepdog start.
I wanted to stop it by
  /etc/init.d/sheepdog stop
but I get
  Stopping Sheepdog QEMU/KVM Block Storage (sheep):
/etc/init.d/sheepdog: line 100: killproc: command not found

Processes are still alive:
  # ps aux | grep sheep
  root      5832  0.0  1.7  85080 34052 ?        Ssl  16:32   0:00
sheep -p 7000 /var/lib/sheepdog
  root      5834  0.0  0.0  82888   488 ?        Ss   16:32   0:00
sheep -p 7000 /var/lib/sheepdog