diff --git a/manifest.toml b/manifest.toml
index 4005ab6..cccc945 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -43,7 +43,7 @@ ram.runtime = "50M"
     [install.language]
     ask.en = "Choose the application language"
     ask.fr = "Choisissez la langue de l'application"
-    type = "string"
+    type = "select"
     choices = ["de", "en-US", "es", "fr", "it", "nl", "pt-PT"]
     default = "fr"