diff --git a/build.sh b/build.sh
index 2aebaf3..244960f 100755
--- a/build.sh
+++ b/build.sh
@@ -208,7 +208,6 @@ export IMG_NAME
 export HOSTNAME
 export USERNAME
 export PASSWORD
-export APT_PROXY
 
 export STAGE
 export STAGE_DIR
diff --git a/scripts/common.sh b/scripts/common.sh
index bbe128e..202408e 100644
--- a/scripts/common.sh
+++ b/scripts/common.sh
@@ -11,8 +11,6 @@ bootstrap() {
 	local ARCH
 	ARCH=$(dpkg --print-architecture)
 
-	export http_proxy=${APT_PROXY}
-
 	if [ "$ARCH" !=  "armhf" ]; then
 		local BOOTSTRAP_CMD=qemu-debootstrap
 	else
diff --git a/stage0/00-configure-apt/00-run.sh b/stage0/00-configure-apt/00-run.sh
index 7966ef1..b4450d4 100755
--- a/stage0/00-configure-apt/00-run.sh
+++ b/stage0/00-configure-apt/00-run.sh
@@ -3,13 +3,6 @@
 install -m 644 files/sources.list ${ROOTFS_DIR}/etc/apt/
 install -m 644 files/raspi.list ${ROOTFS_DIR}/etc/apt/sources.list.d/
 
-if [ -n "$APT_PROXY" ]; then
-	install -m 644 files/51cache ${ROOTFS_DIR}/etc/apt/apt.conf.d/51cache
-	sed ${ROOTFS_DIR}/etc/apt/apt.conf.d/51cache -i -e "s|APT_PROXY|${APT_PROXY}|"
-else
-	rm -f ${ROOTFS_DIR}/etc/apt/apt.conf.d/51cache
-fi
-
 on_chroot apt-key add - < files/raspberrypi.gpg.key
 on_chroot << EOF
 apt-get update
diff --git a/stage0/00-configure-apt/files/51cache b/stage0/00-configure-apt/files/51cache
deleted file mode 100644
index a8920a9..0000000
--- a/stage0/00-configure-apt/files/51cache
+++ /dev/null
@@ -1 +0,0 @@
-Acquire::http { Proxy "APT_PROXY"; };