diff --git a/src/Tokenizer/Analyzer/ArgumentsAnalyzer.php b/src/Tokenizer/Analyzer/ArgumentsAnalyzer.php
index 67a68d35df8..0eb87c18da3 100644
--- a/src/Tokenizer/Analyzer/ArgumentsAnalyzer.php
+++ b/src/Tokenizer/Analyzer/ArgumentsAnalyzer.php
@@ -134,6 +134,12 @@ public function getArgumentInfo(Tokens $tokens, $argumentStart, $argumentEnd)
                 continue;
             }
 
+            if (\defined('T_ATTRIBUTE') && $token->isGivenKind(T_ATTRIBUTE)) {
+                $index = $tokens->findBlockEnd(Tokens::BLOCK_TYPE_ATTRIBUTE, $index);
+
+                continue;
+            }
+
             if ($sawName) {
                 $info['default'] .= $token->getContent();
             } else {
diff --git a/tests/Fixer/FunctionNotation/NullableTypeDeclarationForDefaultNullValueFixerTest.php b/tests/Fixer/FunctionNotation/NullableTypeDeclarationForDefaultNullValueFixerTest.php
index b6d9c879f6c..d02d097941e 100644
--- a/tests/Fixer/FunctionNotation/NullableTypeDeclarationForDefaultNullValueFixerTest.php
+++ b/tests/Fixer/FunctionNotation/NullableTypeDeclarationForDefaultNullValueFixerTest.php
@@ -470,5 +470,23 @@ public function aaa(int | string $bar = null, $baz = 1) {}
                  public function bbb(int | null $bar = null, $baz = 1) {}
             }',
         ];
+
+        yield 'attribute' => [
+            '<?php function foo(#[AnAttribute] string $param = null) {}',
+            '<?php function foo(#[AnAttribute] ?string $param = null) {}',
+        ];
+
+        yield 'attributes' => [
+            '<?php function foo(
+                #[AnAttribute] string $a = null,
+                #[AnAttribute] string $b = null,
+                #[AnAttribute] string $c = null
+            ) {}',
+            '<?php function foo(
+                #[AnAttribute] ?string $a = null,
+                #[AnAttribute] ?string $b = null,
+                #[AnAttribute] ?string $c = null
+            ) {}',
+        ];
     }
 }
diff --git a/tests/Tokenizer/Analyzer/ArgumentsAnalyzerTest.php b/tests/Tokenizer/Analyzer/ArgumentsAnalyzerTest.php
index 96c811a03c7..b940eaa367d 100644
--- a/tests/Tokenizer/Analyzer/ArgumentsAnalyzerTest.php
+++ b/tests/Tokenizer/Analyzer/ArgumentsAnalyzerTest.php
@@ -184,6 +184,22 @@ public function provideArgumentsInfoCases()
 
     public function provideArgumentsInfo80Cases()
     {
+        yield [
+            '<?php function foo(#[AnAttribute] ?string $param = null) {}',
+            5,
+            16,
+            new ArgumentAnalysis(
+                '$param',
+                12,
+                'null',
+                new TypeAnalysis(
+                    '?string',
+                    9,
+                    10
+                )
+            ),
+        ];
+
         foreach (['public', 'protected', 'private'] as $visibility) {
             yield [
                 sprintf('<?php class Foo { public function __construct(%s ?string $param = null) {} }', $visibility),