diff --git a/database/backported/1.5/registerAccount.php b/database/backported/1.5/registerAccount.php
new file mode 100644
index 0000000..4aaaa2b
--- /dev/null
+++ b/database/backported/1.5/registerAccount.php
@@ -0,0 +1,42 @@
+<?php
+$conn = newConnection();
+
+$post = getPostData();
+$username = $post['username'] ?? '';
+$password = $post['password'] ?? '';
+$email = $post['email'] ?? '';
+
+if (!preg_match('/^[a-zA-Z0-9]{3,16}$/', $username)) {
+    exitWithMessage("-1");
+}
+
+if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
+    exitWithMessage("-2");
+}
+
+if (!preg_match('/^(?=.*[A-Za-z])(?=.*\d)[A-Za-z\d!@#$%^&*()_\-+=]{8,}$/', $password)) {
+    exitWithMessage("-3");
+}
+
+$stmt = $conn->prepare("SELECT id FROM users WHERE username = ? OR email = ?");
+$stmt->bind_param("ss", $username, $email);
+$stmt->execute();
+$res = $stmt->get_result();
+
+if ($res->num_rows > 0) {
+    exitWithMessage("-4");
+}
+
+$hashed = password_hash($password, PASSWORD_DEFAULT);
+$token = bin2hex(random_bytes(256));
+$ip = getIPAddress();
+$time = time();
+
+$stmt = $conn->prepare("INSERT INTO users (token, username, password, email, register_time, latest_ip) VALUES (?, ?, ?, ?, ?, ?)");
+$stmt->bind_param("ssssis", $token, $username, $hashed, $email, $time, $ip);
+$stmt->execute();
+
+$stmt->close();
+$conn->close();
+
+echo encrypt("1");
diff --git a/database/registerAccount.php b/database/registerAccount.php
index 81817af..0ffd330 100644
--- a/database/registerAccount.php
+++ b/database/registerAccount.php
@@ -14,6 +14,10 @@ if (isAllowedDatabaseVersion(getClientVersion())) {
         require __DIR__ . '/backported/1.21/registerAccount.php';
         exit;
     }
+    if (getClientVersion() == "1.5.0" || getClientVersion() == "1.5.1" || getClientVersion() == "1.5.2") {
+        require __DIR__ . '/backported/1.5/registerAccount.php';
+        exit;
+    }
 }
 checkClientDatabaseVersion();
 $conn = newConnection();