diff --git a/supabase/functions/ai-generate-subject/index.ts b/supabase/functions/ai-generate-subject/index.ts
index 7da3162..972ca2c 100644
--- a/supabase/functions/ai-generate-subject/index.ts
+++ b/supabase/functions/ai-generate-subject/index.ts
@@ -725,7 +725,7 @@ const jsonFromStringOptional = <T extends z.ZodTypeAny>(schema: T) =>
 
 const DatosBasicosSchema = z.object({
   nombre: z.string().min(1, "El nombre es requerido"),
-  codigo: z.string().min(1).optional().nullable(),
+  codigo: z.string().optional().nullable(),
   tipo: z.union([z.string().min(1), z.null()]).optional().transform((v) =>
     v ?? null
   ),
diff --git a/supabase/migrations/20260213180558_hotfix_estado_asignatura.sql b/supabase/migrations/20260213180558_hotfix_estado_asignatura.sql
new file mode 100644
index 0000000..39f3776
--- /dev/null
+++ b/supabase/migrations/20260213180558_hotfix_estado_asignatura.sql
@@ -0,0 +1,7 @@
+alter table "public"."asignaturas" alter column "estado" drop default;
+
+alter table "public"."asignaturas" alter column estado type "public"."estado_asignatura" using estado::text::"public"."estado_asignatura";
+
+alter table "public"."asignaturas" alter column "estado" set default 'borrador'::public.estado_asignatura;
+
+