diff --git a/src/lib/Output/Generator/Json/FieldTypeHashGenerator.php b/src/lib/Output/Generator/Json/FieldTypeHashGenerator.php
index 81f337a2..89af196d 100644
--- a/src/lib/Output/Generator/Json/FieldTypeHashGenerator.php
+++ b/src/lib/Output/Generator/Json/FieldTypeHashGenerator.php
@@ -166,7 +166,11 @@ private function generateObjectValue($parent, object $value)
             $value = null;
         }
 
-        return $this->generateValue($parent, $value);
+        if (is_array($value)) {
+            return $this->generateArrayValue($parent, $value);
+        }
+
+        return $value;
     }
 }
 
diff --git a/src/lib/Output/Generator/Xml/FieldTypeHashGenerator.php b/src/lib/Output/Generator/Xml/FieldTypeHashGenerator.php
index 739a2d3c..c3fcaf95 100644
--- a/src/lib/Output/Generator/Xml/FieldTypeHashGenerator.php
+++ b/src/lib/Output/Generator/Xml/FieldTypeHashGenerator.php
@@ -255,6 +255,13 @@ private function generateObjectValue(object $value, \XmlWriter $writer, ?string
             ]);
             $value = null;
         }
+
+        if (is_object($value)) {
+            $this->generateNullValue($writer, $key, $elementName);
+
+            return;
+        }
+
         $this->generateValue($writer, $value, $key, $elementName);
     }
 }
diff --git a/tests/lib/Output/Generator/FieldTypeHashGeneratorBaseTest.php b/tests/lib/Output/Generator/FieldTypeHashGeneratorBaseTest.php
index 8d71ca8d..79c03596 100644
--- a/tests/lib/Output/Generator/FieldTypeHashGeneratorBaseTest.php
+++ b/tests/lib/Output/Generator/FieldTypeHashGeneratorBaseTest.php
@@ -219,6 +219,20 @@ public function testGenerateUsingNormalizer(): void
         $this->assertSerializationSame(__FUNCTION__);
     }
 
+    public function testGenerateObjectUsingNormalizer(): void
+    {
+        $object = (object)[];
+        $this->getNormalizer()
+            ->expects(self::once())
+            ->method('normalize')
+            ->with(self::identicalTo($object))
+            ->willReturnArgument(0);
+
+        $this->getGenerator()->generateFieldTypeHash('fieldValue', $object);
+
+        $this->assertSerializationSame(__FUNCTION__);
+    }
+
     public function testGenerateWithMissingNormalizer(): void
     {
         $object = (object)[];
diff --git a/tests/lib/Output/Generator/_fixtures/Json_FieldTypeHashGeneratorTest__testGenerateObjectUsingNormalizer.out b/tests/lib/Output/Generator/_fixtures/Json_FieldTypeHashGeneratorTest__testGenerateObjectUsingNormalizer.out
new file mode 100644
index 00000000..024c4fdf
--- /dev/null
+++ b/tests/lib/Output/Generator/_fixtures/Json_FieldTypeHashGeneratorTest__testGenerateObjectUsingNormalizer.out
@@ -0,0 +1 @@
+{"Field":{"fieldValue":{}}}
\ No newline at end of file
diff --git a/tests/lib/Output/Generator/_fixtures/Xml_FieldTypeHashGeneratorTest__testGenerateObjectUsingNormalizer.out b/tests/lib/Output/Generator/_fixtures/Xml_FieldTypeHashGeneratorTest__testGenerateObjectUsingNormalizer.out
new file mode 100644
index 00000000..40d692ad
--- /dev/null
+++ b/tests/lib/Output/Generator/_fixtures/Xml_FieldTypeHashGeneratorTest__testGenerateObjectUsingNormalizer.out
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Field>
+ <fieldValue/>
+</Field>