diff --git a/system/pages/account/change-password.php b/system/pages/account/change-password.php
index 35058d3d..157515b7 100644
--- a/system/pages/account/change-password.php
+++ b/system/pages/account/change-password.php
@@ -19,18 +19,17 @@ if(!$logged) {
 
 csrfProtect();
 
-$new_password = $_POST['newpassword'] ?? NULL;
-$new_password_confirm = $_POST['newpassword_confirm'] ?? NULL;
-$old_password = $_POST['oldpassword'] ?? NULL;
+$new_password = $_POST['new_password'] ?? null;
+$new_password_confirm = $_POST['new_password_confirm'] ?? null;
+$old_password = $_POST['old_password'] ?? null;
 if(empty($new_password) && empty($new_password_confirm) && empty($old_password)) {
 	$twig->display('account.change-password.html.twig');
 }
-else
-{
+else {
 	if(empty($new_password) || empty($new_password_confirm) || empty($old_password)){
 		$errors[] = 'Please fill in form.';
 	}
-	$password_strlen = strlen($new_password);
+
 	if($new_password != $new_password_confirm) {
 		$errors[] = 'The new passwords do not match!';
 	}
@@ -41,10 +40,13 @@ else
 		}
 
 		/** @var OTS_Account $account_logged */
-		$old_password = encrypt((USE_ACCOUNT_SALT ? $account_logged->getCustomField('salt') : '') . $old_password);
-		if($old_password != $account_logged->getPassword()) {
+		$old_password_hashed = encrypt((USE_ACCOUNT_SALT ? $account_logged->getCustomField('salt') : '') . $old_password);
+		if($old_password_hashed != $account_logged->getPassword()) {
 			$errors[] = 'Current password is incorrect!';
 		}
+		else if ($old_password == $new_password) {
+			$errors[] = 'The old password is same as the new password!';
+		}
 
 		$hooks->trigger(HOOK_ACCOUNT_CHANGE_PASSWORD_POST);
 	}
diff --git a/system/templates/account.change-password.html.twig b/system/templates/account.change-password.html.twig
index db2c1f74..03f82d9b 100644
--- a/system/templates/account.change-password.html.twig
+++ b/system/templates/account.change-password.html.twig
@@ -9,7 +9,7 @@ Please enter your current password and a new password. For your security, please
 			<span>Current Password:</span>
 		</td>
 		<td>
-			<input form="form" type="password" name="oldpassword" size="30" maxlength="29">
+			<input form="form" type="password" id="old_password" name="old_password" size="30" maxlength="29">
 		</td>
 	</tr>
 
@@ -20,7 +20,7 @@ Please enter your current password and a new password. For your security, please
 			<span>New Password:</span>
 		</td>
 		<td style="width:90%;">
-			<input form="form" type="password" name="newpassword" size="30" maxlength="29">
+			<input form="form" type="password" id="new_password" name="new_password" size="30" maxlength="29">
 		</td>
 	</tr>
 
@@ -31,7 +31,7 @@ Please enter your current password and a new password. For your security, please
 			<span>New Password Again:</span>
 		</td>
 		<td>
-			<input form="form" type="password" name="newpassword_confirm" size="30" maxlength="29">
+			<input form="form" type="password" id="new_password_confirm" name="new_password_confirm" size="30" maxlength="29">
 		</td>
 	</tr>
 </table>