diff --git a/src/Schema/Elements/Structure.php b/src/Schema/Elements/Structure.php
index 25dc3b9..6eede02 100644
--- a/src/Schema/Elements/Structure.php
+++ b/src/Schema/Elements/Structure.php
@@ -77,6 +77,9 @@ public function otherItems($type = 'mixed'): self
 	public function normalize($value, Context $context)
 	{
 		$value = $this->doNormalize($value, $context);
+		if (is_object($value)) {
+			$value = (array) $value;
+		}
 		if (is_array($value)) {
 			foreach ($value as $key => $val) {
 				$itemSchema = $this->items[$key] ?? $this->otherItems;
@@ -124,8 +127,6 @@ public function complete($value, Nette\Schema\Context $context)
 	{
 		if ($value === null) {
 			$value = []; // is unable to distinguish null from array in NEON
-		} elseif (is_object($value)) {
-			$value = (array) $value;
 		}
 
 		$expected = 'array' . ($this->range === [null, null] ? '' : ':' . implode('..', $this->range));
diff --git a/tests/Schema/Expect.structure.phpt b/tests/Schema/Expect.structure.phpt
index ade898a..088d248 100644
--- a/tests/Schema/Expect.structure.phpt
+++ b/tests/Schema/Expect.structure.phpt
@@ -49,6 +49,15 @@ test(function () { // accepts object
 	checkValidationErrors(function () use ($schema) {
 		(new Processor)->process($schema, (object) ['a' => 1]);
 	}, ["The option 'a' expects to be string, int 1 given."]);
+
+	$schema = Expect::structure(['a' => Expect::string()->before('strrev')]);
+
+	Assert::equal((object) ['a' => 'oof'], (new Processor)->process($schema, (object) ['a' => 'foo']));
+
+	Assert::equal(
+		(object) ['a' => 'rab'],
+		(new Processor)->processMultiple($schema, [(object) ['a' => 'foo'], (object) ['a' => 'bar']])
+	);
 });