diff --git a/scripts/backup b/scripts/backup
index cd05903..6598df5 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -37,7 +37,9 @@ ynh_backup --src_path="/etc/logrotate.d/$app"
 # BACKUP VARIOUS FILES
 #=================================================
 
-ynh_backup --src_path="/etc/sysctl.d/90-max_map_count-opensearch.conf"
+if [ "${container:-}" != "lxc" ]; then # lxc doesn't allow sysctl to play with kernel options.
+    ynh_backup --src_path="/etc/sysctl.d/90-max_map_count-opensearch.conf"
+fi
 
 #=================================================
 # BACKUP SYSTEMD
diff --git a/scripts/install b/scripts/install
index 0b23b62..77f4389 100755
--- a/scripts/install
+++ b/scripts/install
@@ -23,7 +23,7 @@ ynh_app_setting_set --app="$app" --key="xmx" --value="$xmx"
 ynh_script_progression --message="Setting up source files..." --weight=15
 
 # Download, check integrity, uncompress and patch the source from app.src
-ynh_setup_source --dest_dir="$install_dir" 
+ynh_setup_source --dest_dir="$install_dir"
 
 chmod -R o-rwx "$install_dir"
 chown -R "$app:$app" "$install_dir"
@@ -47,11 +47,11 @@ chown "$app:$app" "$install_dir/config/opensearch.yml" "$install_dir/config/jvm.
 #=================================================
 ynh_script_progression --message="Increasing maximum map count (sysctl)..."
 
-# Increase the maximum number of files inotify can monitor.
-ynh_add_config --template="90-max_map_count-opensearch.conf" --destination="/etc/sysctl.d/"
+if [ "${container:-}" != "lxc" ]; then # lxc doesn't allow sysctl to play with kernel options.
+    # Increase the maximum number of files inotify can monitor.
+    ynh_add_config --template="90-max_map_count-opensearch.conf" --destination="/etc/sysctl.d/"
 
-# Then, reload the kernel configuration.
-if ! [ "${container:-}" = "lxc" ]; then # lxc doesn't allow sysctl to play with kernel options.
+    # Then, reload the kernel configuration.
     sysctl -p /etc/sysctl.d/90-max_map_count-opensearch.conf
 fi
 
diff --git a/scripts/restore b/scripts/restore
index daddc7f..8060058 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -33,8 +33,8 @@ chown -R "$app:www-data" "$data_dir"
 #=================================================
 ynh_script_progression --message="Restoring various files..."
 
-ynh_restore_file --origin_path="/etc/sysctl.d/90-max_map_count-opensearch.conf"
-if ! [ "${container:-}" = "lxc" ]; then # lxc doesn't allow sysctl to play with kernel options.
+if [ "${container:-}" != "lxc" ]; then # lxc doesn't allow sysctl to play with kernel options.
+    ynh_restore_file --origin_path="/etc/sysctl.d/90-max_map_count-opensearch.conf"
     sysctl -p /etc/sysctl.d/90-max_map_count-opensearch.conf
 fi
 
diff --git a/scripts/upgrade b/scripts/upgrade
index 0e5228c..d15bcdc 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -46,10 +46,11 @@ chown "$app:$app" "$install_dir/config/opensearch.yml" "$install_dir/config/jvm.
 #=================================================
 ynh_script_progression --message="Increasing maximum map count (sysctl)..."
 
-# Increase the maximum number of files inotify can monitor.
-ynh_add_config --template="90-max_map_count-opensearch.conf" --destination="/etc/sysctl.d/"
-# Then, reload the kernel configuration.
-if ! [ "${container:-}" = "lxc" ]; then # lxc doesn't allow sysctl to play with kernel options.
+if [ "${container:-}" != "lxc" ]; then # lxc doesn't allow sysctl to play with kernel options.
+    # Increase the maximum number of files inotify can monitor.
+    ynh_add_config --template="90-max_map_count-opensearch.conf" --destination="/etc/sysctl.d/"
+
+    # Then, reload the kernel configuration.
     sysctl -p /etc/sysctl.d/90-max_map_count-opensearch.conf
 fi