diff --git a/src/Constraint.php b/src/Constraint.php
index f3e2dad..84cc210 100644
--- a/src/Constraint.php
+++ b/src/Constraint.php
@@ -185,8 +185,8 @@ public function filterPrimitive($value, string $type, array $constraint, array $
                 }
                 if (is_array($new_value) && !empty($constraint['constraint'])) {
                     try {
-                        foreach ($new_value as $nv) {
-                            $this->check($nv, $constraint['constraint']);
+                        foreach ($new_value as $k => $nv) {
+                            $new_value[$k] = $this->check($nv, $constraint['constraint']);
                         }
                     } catch (ConstraintException $e) {
                         $new_value   = null;
diff --git a/tests/Constraint/URLTest.php b/tests/Constraint/URLTest.php
index 0e5fb6c..9b8830c 100644
--- a/tests/Constraint/URLTest.php
+++ b/tests/Constraint/URLTest.php
@@ -33,6 +33,11 @@ public function constraintData() {
                 ['type' => 'url'],
                 'http://www.example.com/',
             ],
+            [
+                "http://www.example.com/  ",
+                ["type" => "url"],
+                "http://www.example.com/"
+            ],
             [
                 '    ',
                 ['type' => 'url'],
diff --git a/tests/ConstraintTest.php b/tests/ConstraintTest.php
index 338505b..9afda20 100644
--- a/tests/ConstraintTest.php
+++ b/tests/ConstraintTest.php
@@ -276,6 +276,22 @@ public function successData() {
                 ],
                 [1,2,3]
             ],
+            [
+                [
+                    'https://www.example.com',
+                    'https://www.example.com  ',
+                ],
+                [
+                    'type'       => 'array',
+                    'constraint' => [
+                        'type' => 'url',
+                    ],
+                ],
+                [
+                    'https://www.example.com',
+                    'https://www.example.com',
+                ],
+            ],
             [
                 new \ArrayObject(),
                 [