diff --git a/src/main/java/io/hardingadonis/saledock/controller/management/customer/AddCustomerServlet.java b/src/main/java/io/hardingadonis/saledock/controller/management/customer/AddCustomerServlet.java
index 609db90..48de933 100644
--- a/src/main/java/io/hardingadonis/saledock/controller/management/customer/AddCustomerServlet.java
+++ b/src/main/java/io/hardingadonis/saledock/controller/management/customer/AddCustomerServlet.java
@@ -27,15 +27,13 @@ protected void doGet(HttpServletRequest request, HttpServletResponse response)
     protected void doPost(HttpServletRequest request, HttpServletResponse response)
             throws ServletException, IOException {
         String name = request.getParameter("name");
-        String code = request.getParameter("code");
         String address = request.getParameter("address");
         String email = request.getParameter("email");
 
         try {
-            if (name.length() > 0 && code.length() > 0 && address.length() > 0 && email.length() > 0) {
+            if (name.length() > 0 && address.length() > 0 && email.length() > 0) {
                 Customer customer = new Customer();
                 customer.setName(name);
-                customer.setCode(code);
                 customer.setAddress(address);
                 customer.setEmail(email);
                 Singleton.customerDAO.save(customer);
@@ -48,9 +46,6 @@ protected void doPost(HttpServletRequest request, HttpServletResponse response)
             customer.setName(name);
             customer.setAddress(address);
             StringBuilder message = new StringBuilder("Tạo khách hàng không thành công: ");
-            if (e.getMessage().contains(code)) {
-                message.append("Không được trùng mã khách hàng.");
-            }
             if (e.getMessage().contains(email)) {
                 message.append("Không được trùng email.");
             }
diff --git a/src/main/java/io/hardingadonis/saledock/model/Customer.java b/src/main/java/io/hardingadonis/saledock/model/Customer.java
index 1a2b29b..599a4cb 100644
--- a/src/main/java/io/hardingadonis/saledock/model/Customer.java
+++ b/src/main/java/io/hardingadonis/saledock/model/Customer.java
@@ -2,6 +2,8 @@
 
 import jakarta.persistence.*;
 import java.time.*;
+import java.util.*;
+
 import lombok.*;
 
 @Entity(name = "Customer")
@@ -38,6 +40,7 @@ public class Customer {
 
     @PrePersist
     protected void onCreate() {
+        this.code = generateRandomCustomerCode();
         this.createdAt = LocalDateTime.now(ZoneId.of("Asia/Ho_Chi_Minh"));
     }
 
@@ -45,4 +48,10 @@ protected void onCreate() {
     protected void onUpdate() {
         this.updatedAt = LocalDateTime.now(ZoneId.of("Asia/Ho_Chi_Minh"));
     }
+
+    private static String generateRandomCustomerCode() {
+        UUID uuid = UUID.randomUUID();
+
+        return uuid.toString().toUpperCase().replace("-", "").substring(0, 7);
+    }
 }
diff --git a/src/main/java/io/hardingadonis/saledock/model/Order.java b/src/main/java/io/hardingadonis/saledock/model/Order.java
index 2d5f839..2cb18e0 100644
--- a/src/main/java/io/hardingadonis/saledock/model/Order.java
+++ b/src/main/java/io/hardingadonis/saledock/model/Order.java
@@ -87,9 +87,4 @@ private static String generateRandomOrderCode() {
 
         return uuid.toString().toUpperCase().replace("-", "").substring(0, 15);
     }
-
-    public String getTotalToString() {
-        DecimalFormat decimalFormat = new DecimalFormat("#,###.#");
-        return decimalFormat.format(this.total);
-    }
 }
diff --git a/src/main/webapp/view/jsp/management/customer/add-customer.jsp b/src/main/webapp/view/jsp/management/customer/add-customer.jsp
index 036c25e..4fc61a7 100644
--- a/src/main/webapp/view/jsp/management/customer/add-customer.jsp
+++ b/src/main/webapp/view/jsp/management/customer/add-customer.jsp
@@ -42,29 +42,15 @@
                                             <div class="card-body">
                                                 <form action="./add-customer" method="post" id="form-add-customer">
                                                     <div class="row">
-                                                        <div class="col">
+                                                        <div class="mb-3 form-group">
+                                                            <label class="form-label" for="name">
+                                                                <strong>Tên khách hàng</strong>
+                                                            </label>
                                                             <div class="mb-3 form-group">
-                                                                <label class="form-label" for="name">
-                                                                    <strong>Tên khách hàng</strong>
-                                                                </label>
-                                                                <div class="mb-3 form-group">
-                                                                    <input class="form-control" type="text" id="name-customer" placeholder="Nhập tên khách hàng" name="name" value="<%= (error != null && customer != null) ? customer.getName() : ""%>">
-                                                                    <span class="form-message text-danger"></span>
-                                                                </div>
-                                                            </div>
-                                                        </div>
-                                                        <div class="col">
-                                                            <div class="mb-3">
-                                                                <label class="form-label" for="code">
-                                                                    <strong>Mã khách hàng</strong>
-                                                                </label>
-                                                                <div class="mb-3 form-group">
-                                                                    <input class="form-control" type="text" id="code-customer" placeholder="Mã khách hàng" name="code" >
-                                                                    <span class="form-message text-danger"></span>
-                                                                </div> 
+                                                                <input class="form-control" type="text" id="name-customer" placeholder="Nhập tên khách hàng" name="name" value="<%= (error != null && customer != null) ? customer.getName() : ""%>">
+                                                                <span class="form-message text-danger"></span>
                                                             </div>
                                                         </div>
-
                                                     </div>
                                                     <div class="mb-3">
                                                         <div class="mb-3">
@@ -122,11 +108,8 @@
                 formGroupSelector: '.form-group',
                 rules: [
                     Validator.isRequired('#name-customer', 'Vui lòng nhập tên khách hàng!'),
-                    Validator.isRequired('#code-customer', 'Vui lòng nhập mã khách hàng!'),
                     Validator.isRequired('#address-customer', 'Vui lòng nhập địa chỉ khách hàng!'),
                     Validator.isRequired('#email-customer', 'Vui lòng nhập email khách hàng!')
-
-
                 ]
             });
         </script>