diff --git a/manifest.toml b/manifest.toml
index 22ccc6e..645df79 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -56,7 +56,7 @@ ram.runtime = "50M"
     ask.en = "Do you need a database?"
     ask.fr = "Avez-vous besoin d'une base de données ?"
     type = "select"
-    choices = [ "none", "mysql, 'posrgresql" ]
+    choices = [ "none", "mysql, 'postgresql" ]
     default = "none"
 
 [resources]
diff --git a/scripts/upgrade b/scripts/upgrade
index 5593d78..655f49e 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -21,11 +21,11 @@ upgrade_type=$(ynh_check_app_version_changed)
 ynh_script_progression --message="Ensuring downward compatibility..."
 
 # If database doesn't exist, create it and remove with_mysql setting
-if [ -z "${database:-}" ]; then
+if [ -z "$database" ]; then
     if [ $with_mysql -eq 1 ]; then
-        $database="mysql"
+        database="mysql"
     else
-        $database="none"
+        database="none"
     fi
     
     ynh_app_setting_set --app=$app --key=database --value=$database