diff --git a/bin/npplayer b/bin/npplayer
deleted file mode 100755
index 41a2ebc..0000000
Binary files a/bin/npplayer and /dev/null differ
diff --git a/build.sh b/build.sh
index 9052184..63c9750 100755
--- a/build.sh
+++ b/build.sh
@@ -1,12 +1,15 @@
 #!/bin/bash
 
-export XBPS_ARCH=armv6l
+export XBPS_ARCH=${1:-armv6l}
 void_repository=https://alpha.us.repo.voidlinux.org/
 
 set -eo pipefail
 command -v curl tar zstd xz 7z zcat sudo rsync
-test -f external/freshplayerplugin/CMakeLists.txt
-test -f external/nspluginwrapper/configure
+if [ ! -f external/freshplayerplugin/CMakeLists.txt ] || [ ! -f external/nspluginwrapper/configure ] ; then
+    echo "Missing build files for freshplayerplugin and/or nspluginwrapper."
+    echo "Do you need to run git submodule update --init --recursive ?"
+    exit 1
+fi
 
 mkdir -p workdir
 cd workdir
diff --git a/clean.sh b/clean.sh
new file mode 100755
index 0000000..c341e18
--- /dev/null
+++ b/clean.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+grep "$PWD/workdir/dev/null" /etc/mtab && sudo umount workdir/dev/null
+rm -rf workdir
+[ "$1" == dist ] && rm -rf dist