diff --git a/src/schema.ts b/src/schema.ts
index edaba0b4..f21128d3 100644
--- a/src/schema.ts
+++ b/src/schema.ts
@@ -42,7 +42,7 @@ const fileSchema = z.custom<File>((value) => value instanceof File);
 const percentageSchema = z.coerce.number().int().gte(1).lte(100);
 
 const languageSchema = z.string().transform((val, ctx) => {
-  val = val.toLowerCase();
+  val = (val.toLowerCase()).split('-')[0]; // pt-BR -> pt
   if (!ISO6391.validate(val)) {
     ctx.addIssue({
       code: z.ZodIssueCode.custom,