Fixed issue in password strength check.

interface/lib/classes/validate_password.inc.php

@@ -53,11 +53,12 @@ class validate_password {
 			$different += 1;
 		}
 
-		if (preg_match('/[`~!@#$%^&*()_+|\\=-[]}{\';:\/?.>,<" ]/', $password)) {
+		if (preg_match('/[`~!@#$%^&*()_+|\\=-\[\]}{\';:\/?.>,<" ]/', $password)) {
 			$points += 1;
 			$different += 1;
 		}
 		
+
 		if ($points == 0 || $different < 3) {
 			if ($length >= 5 && $length <= 6) {
 				return 1;