diff --git a/exhumate.sh b/exhumate.sh
index bb9c4c4..681659b 100755
--- a/exhumate.sh
+++ b/exhumate.sh
@@ -3,35 +3,43 @@
 set -e
 set -o pipefail
 
+[ -n "$1" ] || { echo "error: Provide a beacon address" >&2; exit 1; } 
+BEACON="$1"
+
+[ -n "$FSOCIETY_TELEGRAM_BACKUP_N" ] || { echo "error: N env var not set." >&2; exit 1; }
+[ -n "$FSOCIETY_TELEGRAM_BACKUP_LOCATION" ] || { echo "error: N env var not set." >&2; exit 1; }
+
+ALPHABET="0 1 2"
+BEACONPORT="60666"
+WORKDIR="/run/user/$UID/ftb"
+ZIPPED_KEYS="$FSOCIETY_TELEGRAM_BACKUP_LOCATION/fsociety-archive-secret-slot$FSOCIETY_TELEGRAM_BACKUP_N.zip.gpg"
+TOMB="$FSOCIETY_TELEGRAM_BACKUP_LOCATION/fsociety-archive-2024-01-05.img"
+
+
+cleanup() {
+    sudo umount ./backup
+    sudo cryptsetup close /dev/mapper/fsociety_backup
+
+    sudo sudo chattr +i "$TOMB" "$ZIPPED_KEYS"
+    rm -rfd "$WORKDIR"
+}
+trap cleanup EXIT
+
 check_dependency() {
     command -v $1 > /dev/null || { echo "error: $1 not found" >&2; exit 1; }
 }
-
 check_dependencies() {
     for dep in "$@"; do
         check_dependency "$dep"
     done
 }
-
 check_dependencies "firefox" "ncat" "gpg" "cryptsetup" "unzip" "shred" 
 
-[ -n "$FSOCIETY_TELEGRAM_BACKUP_N" ] || { echo "error: N env var not set." >&2; exit 1; }
-
-[ -n "$FSOCIETY_TELEGRAM_BACKUP_LOCATION" ] || { echo "error: N env var not set." >&2; exit 1; } 
-
-[ -n "$1" ] || { echo "error: Provide a beacon address" >&2; exit 1; } 
-BEACON="$1"
-
-ALPHABET="0 1 2"
-BEACONPORT="60666"
-WORKDIR="/run/user/$UID/ftb"
 
 [ ! -e "$WORKDIR" ] || { echo "error: Delete $WORKDIR." >&2; exit 1; }
 mkdir -p "$WORKDIR"
 cd "$WORKDIR"
 
-ZIPPED_KEYS="$FSOCIETY_TELEGRAM_BACKUP_LOCATION/fsociety-archive-secret-slot$FSOCIETY_TELEGRAM_BACKUP_N.zip.gpg"
-TOMB="$FSOCIETY_TELEGRAM_BACKUP_LOCATION/fsociety-archive-2024-01-05.img"
 sudo sudo chattr -i "$TOMB" "$ZIPPED_KEYS"
 
 gpg -d "$ZIPPED_KEYS" > keys.zip
@@ -50,10 +58,6 @@ mkdir -p "$FFPROFILE"
 firefox -profile "$FFPROFILE" --no-remote ./backup/messages.html
 find "$FFPROFILE" -type f -exec shred {} \;
 
-sudo umount ./backup
-sudo cryptsetup close /dev/mapper/fsociety_backup
-
-sudo sudo chattr +i "$TOMB" "$ZIPPED_KEYS"
-rm -rfd "$WORKDIR"
+cleanup()
 
 echo "I go to my fathers... in whose mighty company... I shall not now feel ashamed."