diff --git a/src/Controllers/AuthController.php b/src/Controllers/AuthController.php
index 30dcbf43..8e6be80e 100644
--- a/src/Controllers/AuthController.php
+++ b/src/Controllers/AuthController.php
@@ -147,11 +147,12 @@ public function attemptRegister()
 
 		// Validate here first, since some things,
 		// like the password, can only be validated properly here.
-		$rules = array_merge($users->getValidationRules(['only' => ['username']]), [
-			'email'		=> 'required|valid_email|is_unique[users.email]',
-			'password'	 => 'required|strong_password',
-			'pass_confirm' => 'required|matches[password]',
-		]);
+		$rules = [
+			'username'  	=> 'required|alpha_numeric_space|min_length[3]|is_unique[users.username]',
+			'email'			=> 'required|valid_email|is_unique[users.email]',
+			'password'	 	=> 'required|strong_password',
+			'pass_confirm' 	=> 'required|matches[password]',
+		];
 
 		if (! $this->validate($rules))
 		{