diff --git a/conf/systemd.service b/conf/systemd.service
index 12e1fae..1827064 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -9,7 +9,7 @@ User=__APP__
 Group=__APP__
 WorkingDirectory=__INSTALL_DIR__/
 ExecStart=__INSTALL_DIR__/venv/bin/python ./run.py
-Environment=YNHDEV_BACKEND=__BACKEND__
+Environment=YNHDEV_BACKEND=lxd
 
 # Sandboxing options to harden security
 # Details for these options: https://www.freedesktop.org/software/systemd/man/systemd.exec.html
diff --git a/manifest.toml b/manifest.toml
index 9f2bde0..51b1425 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -56,12 +56,6 @@ ram.runtime = "50M"
     type = "boolean"
     default = false
 
-    [install.backend]
-    ask.en = "Should you use LXD or Incus (LXD support will be removed soon)"
-    type = "select"
-    choices = ["lxd"]
-    default = "lxd"
-
 [resources]
     [resources.system_user]
 
diff --git a/scripts/upgrade b/scripts/upgrade
index 61ca3b7..b9b8ad1 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -62,11 +62,6 @@ if [[ -z "${cluster:-}" ]]; then
     ynh_app_setting_set --app="$app" --key="cluster" --value="$cluster"
 fi
 
-if [[ -z "${backend:-}" ]]; then
-    backend=lxd
-    ynh_app_setting_set --app="$app" --key="backend" --value="$backend"
-fi
-
 # Values now use underscore
 if echo "$context" | grep -- -; then
     context=$(echo "$context" | tr - _)