diff --git a/image/cleanup.sh b/image/cleanup.sh
index c4216e5..d954a47 100755
--- a/image/cleanup.sh
+++ b/image/cleanup.sh
@@ -7,6 +7,5 @@ apt-get clean
 rm -rf /bd_build
 rm -rf /tmp/* /var/tmp/*
 rm -rf /var/lib/apt/lists/*
-rm -f /etc/dpkg/dpkg.cfg.d/02apt-speedup
 
 rm -f /etc/ssh/ssh_host_*
diff --git a/image/prepare.sh b/image/prepare.sh
index f0512d4..80d73c2 100755
--- a/image/prepare.sh
+++ b/image/prepare.sh
@@ -3,11 +3,6 @@ set -e
 source /bd_build/buildconfig
 set -x
 
-## Temporarily disable dpkg fsync to make building faster.
-if [[ ! -e /etc/dpkg/dpkg.cfg.d/docker-apt-speedup ]]; then
-	echo force-unsafe-io > /etc/dpkg/dpkg.cfg.d/docker-apt-speedup
-fi
-
 ## Prevent initramfs updates from trying to run grub and lilo.
 ## https://journal.paul.querna.org/articles/2013/10/15/docker-ubuntu-on-rackspace/
 ## http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=594189