diff --git a/src/middlewares/validators/users.validators.js b/src/middlewares/validators/users.validators.js
index 1eff2d6..f1fbb2b 100644
--- a/src/middlewares/validators/users.validators.js
+++ b/src/middlewares/validators/users.validators.js
@@ -4,7 +4,7 @@ const createUserRules = [
     body('user.email')
         .notEmpty().withMessage("can't be blank")
         .isEmail().withMessage('must be a valid email address')
-        .normalizeEmail(),
+        .toLowerCase(),
     body('user.username')
         .notEmpty().withMessage("can't be blank")
         .isLength({ min: 3, max: 50 }).withMessage('must be between 3 and 50 characters')
@@ -18,7 +18,7 @@ const loginRules = [
     body('user.email')
         .notEmpty().withMessage("can't be blank")
         .isEmail().withMessage('must be a valid email address')
-        .normalizeEmail(),
+        .toLowerCase(),
     body('user.password')
         .notEmpty().withMessage("can't be blank"),
 ];
@@ -44,7 +44,7 @@ const updateEmailRules = [
     body('user.email')
         .notEmpty().withMessage("can't be blank")
         .isEmail().withMessage('must be a valid email address')
-        .normalizeEmail(),
+        .toLowerCase(),
 ];
 
 const updateUsernameRules = [