diff --git a/cake/libs/validation.php b/cake/libs/validation.php
index 71d17893349..d10d52c8638 100644
--- a/cake/libs/validation.php
+++ b/cake/libs/validation.php
@@ -874,7 +874,7 @@ function url($check, $strict = false) {
 		$_this =& Validation::getInstance();
 		$_this->__populateIp();
 		$_this->check = $check;
-		$validChars = '([' . preg_quote('!"$&\'()*+,-.@_:;=~') . '\/0-9a-z\p{L}\p{N}]|(%[0-9a-f]{2}))';
+		$validChars = '([' . preg_quote('!"$&\'()*+,-.@_:;=~[]') . '\/0-9a-z\p{L}\p{N}]|(%[0-9a-f]{2}))';
 		$_this->regex = '/^(?:(?:https?|ftps?|file|news|gopher):\/\/)' . (!empty($strict) ? '' : '?') .
 			'(?:' . $_this->__pattern['IPv4'] . '|\[' . $_this->__pattern['IPv6'] . '\]|' . $_this->__pattern['hostname'] . ')' .
 			'(?::[1-9][0-9]{0,4})?' .
diff --git a/cake/tests/cases/libs/validation.test.php b/cake/tests/cases/libs/validation.test.php
index 3ac9d97a220..f9908c07159 100644
--- a/cake/tests/cases/libs/validation.test.php
+++ b/cake/tests/cases/libs/validation.test.php
@@ -1880,6 +1880,7 @@ function testUrl() {
 		$this->assertTrue(Validation::url('http://www.zwischenraume.de'));
 		$this->assertTrue(Validation::url('http://www.zwischenraume.cz'));
 		$this->assertTrue(Validation::url('http://www.last.fm/music/浜崎あゆみ'), 'utf8 path failed');
+		$this->assertTrue(Validation::url('http://www.electrohome.ro/images/239537750-284232-215_300[1].jpg'));
 
 		$this->assertTrue(Validation::url('http://cakephp.org:80'));
 		$this->assertTrue(Validation::url('http://cakephp.org:443'));