diff --git a/src/PSR7/Validators/SerializedParameter.php b/src/PSR7/Validators/SerializedParameter.php
index 9405ce8c..1fe17fb2 100644
--- a/src/PSR7/Validators/SerializedParameter.php
+++ b/src/PSR7/Validators/SerializedParameter.php
@@ -166,11 +166,11 @@ private function castToSchemaType($value, ?string $type)
      */
     protected function convertToSerializationStyle($value, ?CebeSchema $schema)
     {
-        if (
-            $this->explode === false
-            && in_array($this->style, [self::STYLE_FORM, self::STYLE_SPACE_DELIMITED, self::STYLE_PIPE_DELIMITED], true)
-        ) {
-            $value = explode(self::STYLE_DELIMITER_MAP[$this->style], $value);
+        if (in_array($this->style, [self::STYLE_FORM, self::STYLE_SPACE_DELIMITED, self::STYLE_PIPE_DELIMITED], true)) {
+            if ($this->explode === false) {
+                $value = explode(self::STYLE_DELIMITER_MAP[$this->style], $value);
+            }
+
             foreach ($value as &$val) {
                 $val = $this->castToSchemaType($val, $schema->items->type ?? null);
             }
diff --git a/tests/FromCommunity/Issue140Test.php b/tests/FromCommunity/Issue140Test.php
new file mode 100644
index 00000000..9f3e58cf
--- /dev/null
+++ b/tests/FromCommunity/Issue140Test.php
@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+namespace League\OpenAPIValidation\Tests\FromCommunity;
+
+use GuzzleHttp\Psr7\ServerRequest;
+use League\OpenAPIValidation\PSR7\ValidatorBuilder;
+use League\OpenAPIValidation\Tests\PSR7\BaseValidatorTest;
+
+use function parse_str;
+
+/**
+ * @see https://github.com/thephpleague/openapi-psr7-validator/issues/140
+ */
+final class Issue140Test extends BaseValidatorTest
+{
+    public function testIssue140(): void
+    {
+        $json = /** @lang json */
+               <<<JSON
+{
+    "openapi": "3.0.0",
+    "servers": [
+        {
+            "url": "https://localhost"
+        }
+    ],
+    "paths": {
+        "/api/list": {
+            "get": {
+                "summary": "Get a list filtred by ids",
+                "parameters": [
+                    {
+                        "name": "id",
+                        "in": "query",
+                        "description": "Array of ids",
+                        "required": true,
+                        "schema": {
+                            "type": "array",
+                            "items": {
+                                "type": "number"
+                            }
+                        }
+                    }
+                ],
+                "responses": {}
+            }
+        }
+    }
+}
+JSON;
+
+        $validator = (new ValidatorBuilder())->fromJson($json)->getServerRequestValidator();
+
+        $queryString = 'id[]=1&id[]=2';
+        $query       = null;
+        parse_str($queryString, $query);
+
+        $psrRequest = (new ServerRequest('get', 'http://localhost:8000/api/list'))
+            ->withHeader('Content-Type', 'application/json')
+            ->withQueryParams($query);
+
+        $validator->validate($psrRequest);
+
+        $this->addToAssertionCount(1);
+    }
+}