diff --git a/setup/dns.sh b/setup/dns.sh
index 7ef76d96..db553445 100644
--- a/setup/dns.sh
+++ b/setup/dns.sh
@@ -21,9 +21,8 @@ else
 fi
 
 # Okay now install the package.
-# bc is needed by dns_update.
 
-apt_install nsd bc
+apt_install nsd
 
 # Prepare nsd's configuration.