diff --git a/src/Preparator/Error400BadTypesPreparator.php b/src/Preparator/Error400BadTypesPreparator.php
index 81837a8..8092cfb 100644
--- a/src/Preparator/Error400BadTypesPreparator.php
+++ b/src/Preparator/Error400BadTypesPreparator.php
@@ -84,7 +84,7 @@ protected function prepareForBodyFields(Body $body, array $parameters, Operation
         /** @var Schema $schema */
         foreach ($body->getSchema()->properties as $property => $schema) {
             foreach (self::SCHEMA_TYPES as $type) {
-                if ($type === $schema->type) {
+                if ($this->isAllowedType($schema->type, $type)) {
                     continue;
                 }
 
@@ -133,4 +133,9 @@ private function getSchemaExample(string $type)
 
         return $examples[$type];
     }
+
+    private function isAllowedType(string $passedType, string $testedType): bool
+    {
+        return $passedType === $testedType || (self::NUMBER_TYPE === $passedType && self::INTEGER_TYPE === $testedType);
+    }
 }
diff --git a/tests/Preparator/Error400BadTypesPreparatorTest.php b/tests/Preparator/Error400BadTypesPreparatorTest.php
index 8c2a5ea..4bb20fb 100644
--- a/tests/Preparator/Error400BadTypesPreparatorTest.php
+++ b/tests/Preparator/Error400BadTypesPreparatorTest.php
@@ -180,5 +180,75 @@ public function getData(): iterable
                 ),
             ],
         ];
+
+        yield 'For floating-point number body field' => [
+            Api::create()
+                ->addOperation(
+                    Operation::create('test', '/test')
+                        ->setMethod('GET')
+                        ->addRequestBody(
+                            new Body(
+                                new Schema([
+                                    'type' => 'object',
+                                    'properties' => [
+                                        'foo' => [
+                                            'type' => 'number',
+                                            'format' => 'double',
+                                        ],
+                                    ],
+                                    'required' => ['foo'],
+                                ]),
+                                'application/json'
+                            )
+                        )->addExample(
+                            OperationExample::create('foo')
+                                ->setBody(
+                                    BodyExample::create([
+                                        'foo' => 3.14,
+                                    ])
+                                )
+                        )
+                ),
+            [
+                new TestCase(
+                    Error400BadTypesPreparator::getName() . ' - test - foo_body_field_type_string',
+                    OperationExample::create('test')
+                        ->setPath('/test')
+                        ->setBodyContent([
+                            'foo' => 'foo',
+                        ])
+                        ->setResponse(ResponseExample::create('400'))
+                ),
+                new TestCase(
+                    Error400BadTypesPreparator::getName() . ' - test - foo_body_field_type_boolean',
+                    OperationExample::create('test')
+                        ->setPath('/test')
+                        ->setBodyContent([
+                            'foo' => true,
+                        ])
+                        ->setResponse(ResponseExample::create('400')),
+                ),
+                new TestCase(
+                    Error400BadTypesPreparator::getName() . ' - test - foo_body_field_type_array',
+                    OperationExample::create('test')
+                        ->setPath('/test')
+                        ->setBodyContent([
+                            'foo' => ['foo', 'bar'],
+                        ])
+                        ->setResponse(ResponseExample::create('400')),
+                ),
+                new TestCase(
+                    Error400BadTypesPreparator::getName() . ' - test - foo_body_field_type_object',
+                    OperationExample::create('test')
+                        ->setPath('/test')
+                        ->setBodyContent([
+                            'foo' => [
+                                'foo' => 'bar',
+                            ],
+                        ])
+                        ->setResponse(ResponseExample::create('400')),
+                ),
+            ],
+        ];
     }
 }