diff --git a/src/main.sh b/src/main.sh
index 97c7307..dc5aa0d 100644
--- a/src/main.sh
+++ b/src/main.sh
@@ -6,12 +6,12 @@ err() {
   echo "❌ $1" >/dev/tty
 }
 # Read configuration
-# shellcheck source=/dev/null
 CONFIGFILE="$HOME/.config/fzf-vjour/config"
 if [ ! -f "$CONFIGFILE" ]; then
   err "Configuration '$CONFIGFILE' not found."
   exit 1
 fi
+# shellcheck source=/dev/null
 . "$CONFIGFILE"
 if [ -z "${ROOT:-}" ] || [ -z "${SYNC_CMD:-}" ] || [ -z "${COLLECTION_LABELS:-}" ]; then
   err "Configuration is incomplete."
@@ -25,6 +25,12 @@ else
   err "Did not find the command-line fuzzy finder fzf."
   exit 1
 fi
+if command -v "uuidgen" >/dev/null; then
+  UUIDGEN="uuidgen"
+else
+  err "Did not find the uuidgen command."
+  exit 1
+fi
 if command -v "bat" >/dev/null; then
   CAT="bat"
 elif command -v "batcat" >/dev/null; then
@@ -148,7 +154,7 @@ if [ "${1:-}" = "--new" ]; then
   collection=$(echo "$COLLECTION_LABELS" | tr ';' '\n' | fzf --delimiter='=' --with-nth=2 --accept-nth=1)
   file=""
   while [ -f "$file" ] || [ -z "$file" ]; do
-    uuid=$(uuidgen)
+    uuid=$($UUIDGEN)
     file="$ROOT/$collection/$uuid.ics"
   done
   tmpmd=$(mktemp --suffix='.md')