diff --git a/server/config/mariadb.conf.js b/server/config/mariadb.conf.js
index 6ce2f1a..319802b 100644
--- a/server/config/mariadb.conf.js
+++ b/server/config/mariadb.conf.js
@@ -107,7 +107,9 @@ const borrarInscripcion = async (numeroCuenta) => {
   });
 
   return conn
-    .query(`DELETE FROM alumno_inscrito WHERE id_cuenta = ${numeroCuenta}`)
+    .query(
+      `DELETE FROM alumno_inscrito WHERE id_cuenta = ${numeroCuenta} AND periodo = 20`
+    )
     .then((rows) => {
       conn.end();
       return rows[0];
@@ -124,7 +126,7 @@ const borrarRecibo = async (folio) => {
   });
 
   return conn
-    .query(`DELETE FROM recibo WHERE folio = ${folio}`)
+    .query(`DELETE FROM recibo WHERE folio_recibo = ${folio}`)
     .then((rows) => {
       conn.end();
       return rows[0];
@@ -142,7 +144,7 @@ const borrarDetalleServicio = async (numeroCuenta) => {
 
   return conn
     .query(
-      `DELETE FROM detalle_servicio WHERE id_Cuenta = ${numeroCuenta} AND id_servicio = 4`
+      `DELETE FROM detalle_servicio WHERE id_Cuenta = ${numeroCuenta} AND id_servicio = 4 AND id_periodo = 20`
     )
     .then((rows) => {
       conn.end();