diff --git a/login.html b/login.html
index 2d8fe22..c89dbe5 100644
--- a/login.html
+++ b/login.html
@@ -295,12 +295,12 @@ input:focus {
         <p>Login untuk bermain Memory Flip Card Game</p>
       </div>
 
-      <form id="loginForm">
+      <form id="loginForm" action="login.php" method="POST">
         <label>Username</label>
-        <input type="text" id="username" placeholder="Masukkan username">
+        <input type="text" name="username" required id="username" placeholder="Masukan Username">
 
         <label>Password</label>
-        <input type="password" id="password" placeholder="Masukkan password">
+        <input type="password" name="password" required id="password" placeholder="Masukan Password">
 
         <div id="errorBox" class="error"></div>
 
diff --git a/register.html b/register.html
index d8305a0..1abb2b2 100644
--- a/register.html
+++ b/register.html
@@ -230,18 +230,18 @@ input:focus {
         <h2 class="title">Buat Akun Baru ✨</h2>
         <p class="subtitle">Daftar untuk bermain Memory Card Game</p>
 
-        <form id="registerForm">
+        <form id="registerForm" action="register.php" method="POST">
             <label>Username</label>
-            <input type="text" id="username" placeholder="Pilih username">
+            <input type="text" name="username" required id="username" placeholder="Pilih Username">
 
             <label>Email</label>
-            <input type="email" id="email" placeholder="email@example.com">
+            <input type="email" name="email" required id="email" placeholder="Masukan Email">
 
             <label>Password</label>
-            <input type="password" id="password" placeholder="Minimal 6 karakter">
+            <input type="password" name="password" required id="password" placeholder="Minimal 6 karakter">
 
             <label>Konfirmasi Password</label>
-            <input type="password" id="confirmPassword" placeholder="Ketik ulang password">
+            <input type="password" name="confirm_password" id="confirm_password" required placeholder="Ketik ulang password">
 
             <div id="errorBox"></div>
 
@@ -261,7 +261,7 @@ input:focus {
     let username = document.getElementById("username").value.trim();
     let email = document.getElementById("email").value.trim();
     let password = document.getElementById("password").value.trim();
-    let confirmPassword = document.getElementById("confirmPassword").value.trim();
+    let confirmPassword = document.getElementById("confirm_password").value.trim();
     let errorBox = document.getElementById("errorBox");
 
     errorBox.style.display = "none";
@@ -282,7 +282,7 @@ input:focus {
         return;
     }
 
-    if (password !== confirmPassword) {
+    if (password !== confirm_password) {
         showError("Password dan konfirmasi password tidak cocok");
         return;
     }
diff --git a/register.php b/register.php
index 726884f..9a5858c 100644
--- a/register.php
+++ b/register.php
@@ -6,6 +6,11 @@ $email = $_POST['email'];
 $password = $_POST['password'];
 $confirm = $_POST['confirm_password'];
 
+if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
+    echo "<script>alert('Format email tidak valid!'); window.history.back();</script>";
+    exit;
+}
+
 if ($password != $confirm) {
     echo "<script>alert('Password tidak sama'); window.history.back();</script>";
     exit;
@@ -17,7 +22,7 @@ if (mysqli_num_rows($cek) > 0) {
     exit;
 }
 
-$hash = md5($password); 
+$hash = md5($password);
 
 $sql = "INSERT INTO user (username, email, password) VALUES ('$username', '$email', '$hash')";
 if (mysqli_query($conn, $sql)) {