diff --git a/src/controllers/00-doc-template-controller.ts b/src/controllers/00-doc-template-controller.ts
index f457372..bda7956 100644
--- a/src/controllers/00-doc-template-controller.ts
+++ b/src/controllers/00-doc-template-controller.ts
@@ -368,6 +368,9 @@ function gender(text: string, lang: "th" | "en" = "en") {
   }
 }
 
+/**
+ * @deprecated
+ */
 function businessType(text: string, lang: "th" | "en" = "en") {
   switch (lang) {
     case "th":