diff --git a/kernel/Dockerfile.4.4 b/kernel/Dockerfile.4.4
index 82eb095b6..be702ba7f 100644
--- a/kernel/Dockerfile.4.4
+++ b/kernel/Dockerfile.4.4
@@ -1,7 +1,6 @@
 FROM mobylinux/alpine-build-kernel:0e893fbf6fa7638d2f23354de03ea11017bb8065@sha256:3ef3f9d11f0802b759dbd9c43a7706cf0ec37263c99ae90e2b10c29ea85739fa
 
-ARG KERNEL_VERSION
-ARG DEBUG=0
+ARG KERNEL_VERSION=4.4.53
 
 ENV KERNEL_SOURCE=https://www.kernel.org/pub/linux/kernel/v4.x/linux-${KERNEL_VERSION}.tar.xz
 
@@ -14,6 +13,8 @@ COPY kernel_config.debug /linux/debug_config
 COPY kernel_config.4.4 /linux/kernel_config.4.4
 RUN cat /linux/kernel_config.4.4 >> /linux/arch/x86/configs/x86_64_defconfig
 
+ARG DEBUG=0
+
 RUN if [ $DEBUG -ne "0" ]; then \
     sed -i 's/CONFIG_PANIC_ON_OOPS=y/# CONFIG_PANIC_ON_OOPS is not set/' /linux/arch/x86/configs/x86_64_defconfig; \
     cat /linux/debug_config >> /linux/arch/x86/configs/x86_64_defconfig; \
diff --git a/kernel/Dockerfile.aufs b/kernel/Dockerfile.aufs
deleted file mode 100644
index bee56e4bc..000000000
--- a/kernel/Dockerfile.aufs
+++ /dev/null
@@ -1,99 +0,0 @@
-FROM mobylinux/alpine-build-kernel:0e893fbf6fa7638d2f23354de03ea11017bb8065@sha256:3ef3f9d11f0802b759dbd9c43a7706cf0ec37263c99ae90e2b10c29ea85739fa
-
-ARG KERNEL_VERSION
-ARG DEBUG=0
-
-ENV KERNEL_SOURCE=https://www.kernel.org/pub/linux/kernel/v4.x/linux-${KERNEL_VERSION}.tar.xz
-
-RUN curl -fsSL -o linux-${KERNEL_VERSION}.tar.xz ${KERNEL_SOURCE}
-
-RUN cat linux-${KERNEL_VERSION}.tar.xz | tar --absolute-names -xJ &&  mv /linux-${KERNEL_VERSION} /linux
-
-# this is aufs4.9 20170220
-ENV AUFS_REPO       https://github.com/sfjro/aufs4-standalone
-ENV AUFS_BRANCH     aufs4.9
-ENV AUFS_COMMIT     97ef00a26bd2e098fb91d87852cc926e517ec8f7
-
-# Download AUFS
-RUN git clone -b "$AUFS_BRANCH" "$AUFS_REPO" /aufs && \
-    cd /aufs && \
-    git checkout -q "$AUFS_COMMIT"
-
-# aufs-util 20151116
-ENV AUFS_TOOLS_REPO https://github.com/ncopa/aufs-util.git
-ENV AUFS_TOOLS_COMMIT 3b7c5e262b53598a8204a915e485489c46d4e7a4
-
-# Download aufs tools
-RUN git clone ${AUFS_TOOLS_REPO} && \
-    cd /aufs-util && \
-    git checkout "$AUFS_TOOLS_COMMIT" 
-
-#BUILD
-# patch kernel with aufs
-RUN cd /linux && \
-    cp -r /aufs/Documentation /linux && \
-    cp -r /aufs/fs /linux && \
-    cp -r /aufs/include/uapi/linux/aufs_type.h /linux/include/uapi/linux/ && \
-    set -e && for patch in \
-        /aufs/aufs*-kbuild.patch \
-        /aufs/aufs*-base.patch \
-        /aufs/aufs*-mmap.patch \
-        /aufs/aufs*-standalone.patch \
-        /aufs/aufs*-loopback.patch \
-        /aufs/lockdep-debug.patch \
-    ; do \
-        patch -p1 < "$patch"; \
-    done
-
-COPY kernel_config /linux/arch/x86/configs/x86_64_defconfig
-COPY kernel_config.debug /linux/debug_config
-COPY kernel_config.aufs /linux/aufs_config
-RUN cat /linux/aufs_config >> /linux/arch/x86/configs/x86_64_defconfig
-
-RUN if [ $DEBUG -ne "0" ]; then \
-    sed -i 's/CONFIG_PANIC_ON_OOPS=y/# CONFIG_PANIC_ON_OOPS is not set/' /linux/arch/x86/configs/x86_64_defconfig; \
-    cat /linux/debug_config >> /linux/arch/x86/configs/x86_64_defconfig; \
-    fi
-
-# Apply local patches
-COPY patches-4.9/* /patches/
-RUN cd /linux && \
-    set -e && for patch in /patches/*.patch; do \
-        echo "Applying $patch"; \
-        patch -p1 < "$patch"; \
-    done
-
-RUN cd /linux && \
-    make defconfig && \
-    make oldconfig && \
-    make -j "$(getconf _NPROCESSORS_ONLN)" KCFLAGS="-fno-pie"
-RUN cd /linux && \
-    make INSTALL_MOD_PATH=/tmp/kernel-modules modules_install && \
-    ( DVER=$(basename $(find /tmp/kernel-modules/lib/modules/ -mindepth 1 -maxdepth 1)) && \
-      cd /tmp/kernel-modules/lib/modules/$DVER && \
-      rm build source && \
-      ln -s /usr/src/linux-headers-$DVER build ) && \
-    mkdir -p /tmp/kernel-headers/usr && \
-    make INSTALL_HDR_PATH=/tmp/kernel-headers/usr headers_install && \
-    ( cd /tmp/kernel-headers && tar cf /kernel-headers.tar usr ) && \
-    ( cd /tmp/kernel-modules && tar cf /kernel-modules.tar lib ) && \
-    cp vmlinux arch/x86_64/boot/bzImage /
-
-RUN DVER=$(basename $(find /tmp/kernel-modules/lib/modules/ -mindepth 1 -maxdepth 1)) && \
-    dir=/tmp/usr/src/linux-headers-$DVER && \
-    mkdir -p $dir && \
-    cp /linux/.config $dir && \
-    cd /linux && \
-    cp -a include "$dir" && \
-    mkdir -p "$dir"/arch/x86 && cp -a arch/x86/include "$dir"/arch/x86/ && \
-    ( cd /tmp && tar cf /kernel-dev.tar usr/src )
-
-# Build aufs tools, do this here as they need kernel headers and to match aufs
-# Fortunately they are built statically linked
-RUN cd /aufs-util && \
-    CPPFLAGS="-I/tmp/include" CFLAGS=$CPPFLAGS LDFLAGS=$CPPFLAGS make && \
-    DESTDIR=/tmp/aufs-utils make install && \
-    rm -rf /tmp/aufs-utils/usr/lib /tmp/aufs-utils/usr/share && \
-    cd /tmp/aufs-utils && rm libau* && tar cf /aufs-utils.tar .
-
-RUN printf "KERNEL_SOURCE=${KERNEL_SOURCE}\nAUFS_REPO=${AUFS_REPO}\nAUFS_BRANCH=${AUFS_BRANCH}\nAUFS_COMMIT=${AUFS_COMMIT}\nAUFS_TOOLS_REPO=${AUFS_TOOLS_REPO}\nAUFS_TOOLS_COMMIT=${AUFS_TOOLS_COMMIT}\n" > /kernel-source-info
diff --git a/kernel/Makefile b/kernel/Makefile
index d3c8cb2bb..97d401588 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -2,10 +2,6 @@ DEBUG ?= 0
 
 all:	bzImage push
 
-ifdef AUFS
-KERNEL_VERSION=4.9.14
-DEPS=Dockerfile.aufs Makefile kernel_config kernel_config.debug kernel_config.aufs patches-4.9
-else
 ifdef LTS4.4
 KERNEL_VERSION=4.4.53
 DEPS=Dockerfile.4.4 Makefile kernel_config kernel_config.debug kernel_config.4.4 patches-4.4
@@ -13,7 +9,6 @@ else
 KERNEL_VERSION=4.9.14
 DEPS=Dockerfile Makefile kernel_config kernel_config.debug patches-4.9
 endif
-endif
 kernel.tag: $(DEPS)
 	BUILD=$$( tar cf - $^ | docker build -f $< --build-arg DEBUG=$(DEBUG) --build-arg KERNEL_VERSION=$(KERNEL_VERSION) -q - ) && [ -n "$$BUILD" ] && echo "Built $$BUILD" && echo "$$BUILD" > $@