diff --git a/readme.md b/readme.md
index bd7c815..a88f85a 100644
--- a/readme.md
+++ b/readme.md
@@ -7,7 +7,7 @@ automatically on boot (no need to enter desktop mode).
 ## Installing Tailscale
 
 1. Clone this repo to your Deck.
-2. Run `sudo bash tailscale.sh` to install Tailscale (or update the existing
+2. Run `sudo ./tailscale.sh` to install Tailscale (or update the existing
    installation).
 3. Run `source /etc/profile.d/tailscale.sh` to put the binaries in your path
 4. Run `sudo tailscale up --qr --operator=deck --ssh` to have Tailscale generate
@@ -27,7 +27,7 @@ If it doesn't, keep reading.
 > [Suggestions for how to fix this are welcomed.](https://github.com/legowerewolf/deck-tailscale/issues/2)
 
 1. Git fetch and pull to make sure you're up to date.
-2. Run `sudo bash tailscale.sh` again.
+2. Run `sudo ./tailscale.sh` again.
 
 This process overwrites the existing binaries and service file, so it's not
 recommended to tweak those files directly. The configuration file at
diff --git a/tailscale.sh b/tailscale.sh
old mode 100644
new mode 100755
index 702f166..cec5d87
--- a/tailscale.sh
+++ b/tailscale.sh
@@ -11,6 +11,7 @@ pushd . > /dev/null
 
 # make a temporary directory, save the name, and move into it
 dir="$(mktemp -d)"
+trap "rm -rf -- ${dir@Q}" EXIT
 cd "${dir}"
 
 echo -n "Getting version..."
@@ -73,9 +74,8 @@ if ! test -f /etc/default/tailscaled; then
   cp -rf $tar_dir/systemd/tailscaled.defaults /etc/default/tailscaled
 fi
 
-# return to our original directory (silently) and clean up
+# return to our original directory (silently)
 popd > /dev/null
-rm -rf "${dir}"
 
 # if an override file already exists, back up and remove
 if test -f /etc/systemd/system/tailscaled.service.d/override.conf; then
diff --git a/uninstall.sh b/uninstall.sh
old mode 100644
new mode 100755
index bcb7670..4bfe8bb
--- a/uninstall.sh
+++ b/uninstall.sh
@@ -1,6 +1,9 @@
+#!/bin/sh
 systemctl stop tailscaled
 systemctl disable tailscaled
 rm /etc/systemd/system/tailscaled.service
 rm /etc/default/tailscaled
 rm /etc/profile.d/tailscale.sh
 rm -rf /opt/tailscale/tailscale
+rm /etc/systemd/system/tailscaled.service.d/override.conf
+rmdir /etc/systemd/system/tailscaled.service.d