diff --git a/packages/Php/tests/Rector/FunctionLike/AddDefaultValueForUndefinedVariableRector/AddDefaultValueForUndefinedVariableRectorTest.php b/packages/Php/tests/Rector/FunctionLike/AddDefaultValueForUndefinedVariableRector/AddDefaultValueForUndefinedVariableRectorTest.php
index 5148312042c..547f0b0d1bc 100644
--- a/packages/Php/tests/Rector/FunctionLike/AddDefaultValueForUndefinedVariableRector/AddDefaultValueForUndefinedVariableRectorTest.php
+++ b/packages/Php/tests/Rector/FunctionLike/AddDefaultValueForUndefinedVariableRector/AddDefaultValueForUndefinedVariableRectorTest.php
@@ -10,6 +10,7 @@ final class AddDefaultValueForUndefinedVariableRectorTest extends AbstractRector
     public function test(): void
     {
         $this->doTestFiles([
+            __DIR__ . '/Fixture/anonymous_function.php.inc',
             __DIR__ . '/Fixture/fixture.php.inc',
             __DIR__ . '/Fixture/in_foreach.php.inc',
             __DIR__ . '/Fixture/vimeo_one.php.inc',
diff --git a/packages/Php/tests/Rector/FunctionLike/AddDefaultValueForUndefinedVariableRector/Fixture/anonymous_function.php.inc b/packages/Php/tests/Rector/FunctionLike/AddDefaultValueForUndefinedVariableRector/Fixture/anonymous_function.php.inc
new file mode 100644
index 00000000000..70e2952e319
--- /dev/null
+++ b/packages/Php/tests/Rector/FunctionLike/AddDefaultValueForUndefinedVariableRector/Fixture/anonymous_function.php.inc
@@ -0,0 +1,47 @@
+<?php
+
+namespace Rector\Php\Tests\Rector\FunctionLike\AddDefaultValueForUndefinedVariableRector\Fixture;
+
+class AnonymousFunction
+{
+    public function run()
+    {
+        $lines = [];
+
+        return array_map(static function ($line) {
+            [$value1, $value2] = explode("\t", $line);
+
+            return [
+                'value_1' => $value1,
+                'value_2' => $value2,
+            ];
+        }, $lines);
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Rector\Php\Tests\Rector\FunctionLike\AddDefaultValueForUndefinedVariableRector\Fixture;
+
+class AnonymousFunction
+{
+    public function run()
+    {
+        $lines = [];
+
+        return array_map(static function ($line) {
+            $value1 = null;
+            $value2 = null;
+            [$value1, $value2] = explode("\t", $line);
+
+            return [
+                'value_1' => $value1,
+                'value_2' => $value2,
+            ];
+        }, $lines);
+    }
+}
+
+?>