diff --git a/server/config/sybase.js b/server/config/sybase.js
index 608806d..0ffc607 100644
--- a/server/config/sybase.js
+++ b/server/config/sybase.js
@@ -13,7 +13,7 @@ const alumno = (numeroCuenta) => {
     db.connect((err) => {
       if (err) reject(err);
       db.query(
-        `select * from servicio_social where cuenta = "${numeroCuenta}"`,
+        `select * from servicio_social where cuenta = '${numeroCuenta}'`,
         (err, data) => {
           if (err) reject(err);
           db.disconnect();