diff --git a/rules-tests/Php85/Rector/FuncCall/ArrayKeyExistsNullToEmptyStringRector/Fixture/key_null.php.inc b/rules-tests/Php85/Rector/FuncCall/ArrayKeyExistsNullToEmptyStringRector/Fixture/key_null.php.inc
index 028c9c4e852..a67a072f816 100644
--- a/rules-tests/Php85/Rector/FuncCall/ArrayKeyExistsNullToEmptyStringRector/Fixture/key_null.php.inc
+++ b/rules-tests/Php85/Rector/FuncCall/ArrayKeyExistsNullToEmptyStringRector/Fixture/key_null.php.inc
@@ -1,11 +1,15 @@
 <?php
 
+namespace Rector\Tests\Php85\Rector\FuncCall\ArrayKeyExistsNullToEmptyStringRector\Fixture;
+
 array_key_exists(null, $array);
 
 ?>
 -----
 <?php
 
+namespace Rector\Tests\Php85\Rector\FuncCall\ArrayKeyExistsNullToEmptyStringRector\Fixture;
+
 array_key_exists('', $array);
 
 ?>
\ No newline at end of file
diff --git a/rules-tests/Php85/Rector/FuncCall/ArrayKeyExistsNullToEmptyStringRector/Fixture/key_null_named_flip.php.inc b/rules-tests/Php85/Rector/FuncCall/ArrayKeyExistsNullToEmptyStringRector/Fixture/key_null_named_flip.php.inc
new file mode 100644
index 00000000000..b8606d38af2
--- /dev/null
+++ b/rules-tests/Php85/Rector/FuncCall/ArrayKeyExistsNullToEmptyStringRector/Fixture/key_null_named_flip.php.inc
@@ -0,0 +1,15 @@
+<?php
+
+namespace Rector\Tests\Php85\Rector\FuncCall\ArrayKeyExistsNullToEmptyStringRector\Fixture;
+
+array_key_exists(array: $array, key: null);
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\Php85\Rector\FuncCall\ArrayKeyExistsNullToEmptyStringRector\Fixture;
+
+array_key_exists(array: $array, key: '');
+
+?>
\ No newline at end of file
diff --git a/rules-tests/Php85/Rector/FuncCall/ArrayKeyExistsNullToEmptyStringRector/Fixture/key_null_var.php.inc b/rules-tests/Php85/Rector/FuncCall/ArrayKeyExistsNullToEmptyStringRector/Fixture/key_null_var.php.inc
index e692a56612f..dde06a0d90c 100644
--- a/rules-tests/Php85/Rector/FuncCall/ArrayKeyExistsNullToEmptyStringRector/Fixture/key_null_var.php.inc
+++ b/rules-tests/Php85/Rector/FuncCall/ArrayKeyExistsNullToEmptyStringRector/Fixture/key_null_var.php.inc
@@ -1,11 +1,15 @@
 <?php
 
+namespace Rector\Tests\Php85\Rector\FuncCall\ArrayKeyExistsNullToEmptyStringRector\Fixture;
+
 array_key_exists($k, $array);
 
 ?>
 -----
 <?php
 
+namespace Rector\Tests\Php85\Rector\FuncCall\ArrayKeyExistsNullToEmptyStringRector\Fixture;
+
 array_key_exists((string) $k, $array);
 
 ?>
\ No newline at end of file
diff --git a/rules/Php85/Rector/FuncCall/ArrayKeyExistsNullToEmptyStringRector.php b/rules/Php85/Rector/FuncCall/ArrayKeyExistsNullToEmptyStringRector.php
index 41db245f894..84d8c80d9da 100644
--- a/rules/Php85/Rector/FuncCall/ArrayKeyExistsNullToEmptyStringRector.php
+++ b/rules/Php85/Rector/FuncCall/ArrayKeyExistsNullToEmptyStringRector.php
@@ -5,7 +5,9 @@
 namespace Rector\Php85\Rector\FuncCall;
 
 use PhpParser\Node;
+use PhpParser\Node\Arg;
 use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Identifier;
 use PHPStan\Analyser\Scope;
 use PHPStan\Reflection\ClassReflection;
 use PHPStan\Reflection\FunctionReflection;
@@ -74,6 +76,10 @@ public function refactor(Node $node): ?Node
 
         $args = $node->getArgs();
 
+        if (count($args) !== 2) {
+            return null;
+        }
+
         $classReflection = $scope->getClassReflection();
         $isTrait = $classReflection instanceof ClassReflection && $classReflection->isTrait();
 
@@ -87,7 +93,7 @@ public function refactor(Node $node): ?Node
         $result = $this->nullToStrictStringConverter->convertIfNull(
             $node,
             $args,
-            0,
+            $this->resolvePosition($args),
             $isTrait,
             $scope,
             $parametersAcceptor
@@ -99,6 +105,20 @@ public function refactor(Node $node): ?Node
         return null;
     }
 
+    /**
+     * @param Arg[] $args
+     */
+    private function resolvePosition(array $args): int
+    {
+        foreach ($args as $position => $arg) {
+            if ($arg->name instanceof Identifier && $arg->name->toString() === 'key') {
+                return $position;
+            }
+        }
+
+        return 0;
+    }
+
     public function provideMinPhpVersion(): int
     {
         return PhpVersionFeature::DEPRECATE_NULL_ARG_IN_ARRAY_KEY_EXISTS_FUNCTION;