diff --git a/scripts/_common.sh b/scripts/_common.sh
index ef8f08a..24d6046 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -34,5 +34,5 @@ extract_freshrss() {
     || ynh_die "Invalid checksum of downloaded tarball"
   tar xf "$rc_tarball" -C "$DESTDIR" --strip-components 1 \
     || ynh_die "Unable to extract FreshRss tarball"
-  rm "$rc_tarball"
+  sudo rm "$rc_tarball"
 }
diff --git a/scripts/backup b/scripts/backup
index b80ebc0..00aa3fe 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-set -e
+set -eu
 
 # The parameter $1 is the backup directory location dedicated to the app
 BACKUP_DIR=$1
diff --git a/scripts/install b/scripts/install
index 3c7e1c7..a635537 100755
--- a/scripts/install
+++ b/scripts/install
@@ -48,22 +48,6 @@ extract_freshrss "$TMPDIR"
 $TMPDIR/cli/do-install.php --default_user $admin_user --auth_type http_auth --environment production --base_url $domain/$path --title FreshRSS --api_enabled --db-type mysql --db-host localhost --db-user $db_user --db-password $db_pwd --db-base $db_name
 
 # Add users
-#check wallabag
-sharingEnable=0
-if sudo yunohost app list --installed -f wallabag2 | grep -q id ; then
-    echo "Detected wallabag V2"
-    wallabagPath=$(sudo yunohost app setting wallabag2 path | sed 's#/*$##')
-    wallabagUrl=$domain$wallabagPath
-    sharingWallabag="'sharing' => \n\tarray( \n\t\t0 => \n\t\tarray(\n\t\t\t'type' => 'wallabagv2',\n\t\t\t'name' => 'Wallabag',\n\t\t\t'url' => 'https://$wallabagUrl',\n\t\t),"
-    sharingEnable=1
-elif sudo yunohost app list --installed -f wallabag | grep -q id ; then
-    echo "Detected wallabag"
-    wallabagPath=$(sudo yunohost app setting wallabag path)
-    wallabagUrl=$domain$wallabagPath
-    sharingWallabag="'sharing' => \n\tarray( \n\t\t0 => \n\t\tarray(\n\t\t\t'type' => 'wallabag',\n\t\t\t'name' => 'Wallabag',\n\t\t\t'url' => 'https://$wallabagUrl',\n\t\t),"
-    sharingEnable=1
-fi
-
 for myuser in $(ynh_user_list)
 do
     user_token=$(ynh_string_random)
diff --git a/scripts/remove b/scripts/remove
index 88a545a..f2e62c4 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 # Exit on command errors and treat unset variables as an error
-set -eu
+set -u
 
 # Source app helpers
 . /usr/share/yunohost/helpers
diff --git a/scripts/restore b/scripts/restore
index a477881..be7424e 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-set -e
+set -eu
 
 # The parameter $1 is the backup directory location dedicated to the app
 BACKUP_DIR=$1
diff --git a/scripts/upgrade b/scripts/upgrade
index b44bfe0..be96054 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -8,6 +8,10 @@ set -eu
 # Source app helpers
 . /usr/share/yunohost/helpers
 
+#install extention for api if necessary
+ynh_package_install_from_equivs ../conf/${DEPS_PKG_NAME}.control \
+  || ynh_die "Unable to install dependencies"
+
 #old version cleanup
 if [ -f $FINAL_PATH/data/user.php.dist ]; then
     sudo rm $FINAL_PATH/data/user.php.dist
@@ -36,8 +40,3 @@ sudo chown -R www-data: $TMPDIR/extensions/
 # Clean up existing files and copy new files to the right place
 sudo rm -rf "$FINAL_PATH"
 sudo cp -rp "$TMPDIR" "$FINAL_PATH"
-
-
-#install extention for api if necessary
-ynh_package_install_from_equivs ../conf/${DEPS_PKG_NAME}.control \
-  || ynh_die "Unable to install dependencies"