diff --git a/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php b/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
index 0e3fda568ea9e..f4be086e76e26 100644
--- a/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
@@ -202,7 +202,7 @@ public function getType(string $class, string $property, array $context = []): ?
                 $type = $this->typeResolver->resolve($mutatorReflection->getParameters()[0]);
 
                 if (!$type instanceof CollectionType && \in_array($prefix, $this->arrayMutatorPrefixes, true)) {
-                    $type = Type::list($type);
+                    $type = $this->isNullableProperty($class, $property) ? Type::nullable(Type::list($type)) : Type::list($type);
                 }
 
                 return $type;
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpDocExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpDocExtractorTest.php
index 06fc50e5df39e..7d72f9c274618 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpDocExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpDocExtractorTest.php
@@ -164,6 +164,7 @@ public static function provideLegacyTypes()
             ['listOfStrings', [new LegacyType(LegacyType::BUILTIN_TYPE_ARRAY, false, null, true, new LegacyType(LegacyType::BUILTIN_TYPE_INT), new LegacyType(LegacyType::BUILTIN_TYPE_STRING))], null, null],
             ['self', [new LegacyType(LegacyType::BUILTIN_TYPE_OBJECT, false, Dummy::class)], null, null],
             ['collectionAsObject', [new LegacyType(LegacyType::BUILTIN_TYPE_OBJECT, false, DummyCollection::class, true, [new LegacyType(LegacyType::BUILTIN_TYPE_INT)], [new LegacyType(LegacyType::BUILTIN_TYPE_STRING)])], null, null],
+            ['nullableTypedCollection', [new LegacyType(LegacyType::BUILTIN_TYPE_ARRAY, true, null, true, new LegacyType(LegacyType::BUILTIN_TYPE_INT), new LegacyType(LegacyType::BUILTIN_TYPE_OBJECT, false, Dummy::class))], null, null],
         ];
     }
 
@@ -548,6 +549,7 @@ public static function typeProvider(): iterable
         yield ['collection', Type::list(Type::object(\DateTimeImmutable::class)), null, null];
         yield ['nestedCollection', Type::list(Type::list(Type::string())), null, null];
         yield ['mixedCollection', Type::array(), null, null];
+        yield ['nullableTypedCollection', Type::nullable(Type::list(Type::object(Dummy::class))), null, null];
         yield ['a', Type::int(), 'A.', null];
         yield ['b', Type::nullable(Type::object(ParentDummy::class)), 'B.', null];
         yield ['c', Type::nullable(Type::bool()), null, null];
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php
index d5e5c676727ed..02b4bd84824cf 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php
@@ -76,6 +76,7 @@ public function testGetProperties()
                 'listOfStrings',
                 'parentAnnotation',
                 'genericInterface',
+                'nullableTypedCollection',
                 'foo',
                 'foo2',
                 'foo3',
@@ -143,6 +144,7 @@ public function testGetPropertiesWithCustomPrefixes()
                 'listOfStrings',
                 'parentAnnotation',
                 'genericInterface',
+                'nullableTypedCollection',
                 'foo',
                 'foo2',
                 'foo3',
@@ -199,6 +201,7 @@ public function testGetPropertiesWithNoPrefixes()
                 'listOfStrings',
                 'parentAnnotation',
                 'genericInterface',
+                'nullableTypedCollection',
                 'foo',
                 'foo2',
                 'foo3',
@@ -865,6 +868,7 @@ public function testTypedProperties()
         $this->assertEquals(Type::list(Type::string()), $this->extractor->getType(Php74Dummy::class, 'stringCollection'));
         $this->assertEquals(Type::nullable(Type::int()), $this->extractor->getType(Php74Dummy::class, 'nullableWithDefault'));
         $this->assertEquals(Type::array(), $this->extractor->getType(Php74Dummy::class, 'collection'));
+        $this->assertEquals(Type::nullable(Type::list(Type::object(Dummy::class))), $this->extractor->getType(Php74Dummy::class, 'nullableTypedCollection'));
     }
 
     /**
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/Dummy.php b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/Dummy.php
index 8cd7464a7fe93..17a0b02a46ed1 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/Dummy.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/Dummy.php
@@ -177,6 +177,9 @@ class Dummy extends ParentDummy
      */
     public $genericInterface;
 
+    /** @var Dummy[]|null  */
+    public $nullableTypedCollection = null;
+
     public static function getStatic()
     {
     }
@@ -269,4 +272,8 @@ public function addDate(\DateTimeImmutable $date)
     public function hasElement(string $element): bool
     {
     }
+
+    public function addNullableTypedCollection(Dummy $dummy): void
+    {
+    }
 }
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/Php74Dummy.php b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/Php74Dummy.php
index 816b857b67b11..dc72d07756b88 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/Php74Dummy.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/Php74Dummy.php
@@ -23,6 +23,9 @@ class Php74Dummy
     private ?int $nullableWithDefault = 1;
     public array $collection = [];
 
+    /** @var Dummy[]|null  */
+    public ?array $nullableTypedCollection = null;
+
     public function addStringCollection(string $string): void
     {
     }
@@ -30,4 +33,8 @@ public function addStringCollection(string $string): void
     public function removeStringCollection(string $string): void
     {
     }
+
+    public function addNullableTypedCollection(Dummy $dummy): void
+    {
+    }
 }