diff --git a/data-ingest/fetch_latest_arcep.sh b/data-ingest/fetch_latest_arcep.sh
index b963add..266efa6 100755
--- a/data-ingest/fetch_latest_arcep.sh
+++ b/data-ingest/fetch_latest_arcep.sh
@@ -33,7 +33,8 @@ source_versions() {
   ver_file=${dir_out}/${VERSIONS_FILENAME}
   LAST_ARCEP_ZIP=""
   BEFORE_ARCEP_ZIP=""
-  [[ -f ${ver_file} ]] && source ${ver_file}
+  # shellcheck source=/dev/null
+  [[ -f ${ver_file} ]] && source "${ver_file}"
   g_last_arcep_zip=${LAST_ARCEP_ZIP}
   g_before_arcep_zip=${BEFORE_ARCEP_ZIP}
 }
@@ -44,13 +45,13 @@ dl_latest_arcep() {
   rc=0
 
   echo "Create out dir ${dir_out} if not exist"
-  mkdir -p ${dir_out}
+  mkdir -p "${dir_out}"
   ver_file=${dir_out}/${VERSIONS_FILENAME}
-  touch ${ver_file}
+  touch "${ver_file}"
 
   latest_file_url="$(curl -s ${GOUV_API_URL} | jq -r '.resources[] |objects | .url'  | grep -i immeubles | head -1)"
-  file_date=$(echo $latest_file_url | cut -f6 -d '/')
-  file_name=$(echo $latest_file_url | cut -f7 -d '/')
+  file_date=$(echo "$latest_file_url" | cut -f6 -d '/')
+  file_name=$(echo "$latest_file_url" | cut -f7 -d '/')
   latest_f=${file_date}__${file_name}
 
   echo "Found ${latest_f} Check if already exist"
@@ -58,14 +59,14 @@ dl_latest_arcep() {
     echo "File ${latest_f} is already the latest ! Do not do anything"
   else
     echo "File ${latest_f} not there, download it"
-    wget -O ${dir_out}/${latest_f} ${latest_file_url} || rc=1
+    wget -O "${dir_out}"/"${latest_f}" "${latest_file_url}" || rc=1
     g_penultimate_arcep_zip=${g_before_arcep_zip}
     g_before_arcep_zip=${g_last_arcep_zip}
     g_last_arcep_zip=${latest_f}
     g_arcep_to_unzip=${latest_f}
     echo "OK, update versions file"
-    echo "LAST_ARCEP_ZIP=${g_last_arcep_zip}" > ${ver_file}
-    echo "BEFORE_ARCEP_ZIP=${g_before_arcep_zip}" >> ${ver_file}
+    echo "LAST_ARCEP_ZIP=${g_last_arcep_zip}" > "${ver_file}"
+    echo "BEFORE_ARCEP_ZIP=${g_before_arcep_zip}" >> "${ver_file}"
   fi
 
   return ${rc}
@@ -75,10 +76,10 @@ dl_latest_arcep() {
 unzip_arcep() {
   dir_out=$1
   zip_file=$2
-  zip_dir=$(echo ${zip_file} | rev | cut -f2- -d '.' | rev)
+  zip_dir=$(echo "${zip_file}" | rev | cut -f2- -d '.' | rev)
   mkdir -p "${dir_out}/$zip_dir"
   echo "Unzip file ${dir_out}/${zip_file}"
-  unzip ${dir_out}/${zip_file} -d ${dir_out}/$zip_dir || return 1
+  unzip "${dir_out}"/"${zip_file}" -d "${dir_out}"/"$zip_dir" || return 1
   return 0
 }
 
@@ -90,10 +91,10 @@ main () {
 
   # Read inputs
   [[ $# -eq 0 ]] && usage && return 1
-  while [ -n $1 ] ; do
+  while [[ -n "$1" ]] ; do
     case $1 in
       -d|--dir-out)
-        dir_out=$(realpath $2)
+        dir_out=$(realpath "$2")
         shift
         ;;
       -r|--remove-penultimate)
@@ -120,13 +121,13 @@ main () {
 
   rc=0
   # Read existing dl versions
-  source_versions ${dir_out} || rc=1
+  source_versions "${dir_out}" || rc=1
   # Download latest zip file if needed
-  [[ $rc -eq 0 ]] && dl_latest_arcep ${dir_out} || rc=1
+  [[ $rc -eq 0 ]] && dl_latest_arcep "${dir_out}" || rc=1
   # If download succeeded and there is a file to unzip
   if [[ $rc -eq 0 && -n $g_arcep_to_unzip ]]; then
     # unzip file
-    unzip_arcep ${dir_out} ${g_last_arcep_zip} || rc=1
+    unzip_arcep "${dir_out}" "${g_last_arcep_zip}" || rc=1
     
     # Unzip succeeded and need to remove penultimate arcep data (if exists)
     if [[ $rc -eq 0 \
@@ -135,11 +136,11 @@ main () {
         && -f ${dir_out}/$g_penultimate_arcep_zip ]]; then
 
       echo "Delete penultimate zip ${dir_out}/$g_penultimate_arcep_zip"
-      rm -f ${dir_out}/$g_penultimate_arcep_zip
-      zip_dir=$(echo ${g_penultimate_arcep_zip} | rev | cut -f2- -d '.' | rev)
+      rm -f "${dir_out}"/"$g_penultimate_arcep_zip"
+      zip_dir=$(echo "${g_penultimate_arcep_zip}" | rev | cut -f2- -d '.' | rev)
       if [[ -d ${dir_out}/${zip_dir} ]]; then
         echo "remove dir ${dir_out}/${zip_dir}"
-        rm -rf ${dir_out}/${zip_dir}
+        rm -rf "${dir_out:?}"/"${zip_dir}"
       fi
     elif [[ $rc -ne 0 ]]; then
       echo "Failed to unzip ${g_last_arcep_zip} !"
diff --git a/data-ingest/ingest_arcep b/data-ingest/ingest_arcep
index 174706f..d0bf46c 100755
--- a/data-ingest/ingest_arcep
+++ b/data-ingest/ingest_arcep
@@ -5,7 +5,7 @@ ARCEP_WWW="https://www.data.gouv.fr/fr/datasets/le-marche-du-haut-et-tres-haut-d
 
 if [ "$#" -ne 2 ]; then
     echo "Usage: ingest path-to-arcep-ipe-csv-file path-to-generated-db"
-    echo "ARCEP file can be downloaded here: ${ARCEP_WWW}"
+    echo "ARCEP file can be downloaded here: ${ARCEP_WWW} or with script fetch_latest_arcep.sh"
     echo ""
     exit 1
 fi