diff --git a/phpstan.neon b/phpstan.neon
index 8a310a5..f5da971 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -4,4 +4,3 @@ parameters:
     checkMissingCallableSignature: true
     paths:
         - src
-        - tests
diff --git a/src/lib/PhpCsFixer/Rule/MultilineParametersFixer.php b/src/lib/PhpCsFixer/Rule/MultilineParametersFixer.php
deleted file mode 100644
index cbe75ba..0000000
--- a/src/lib/PhpCsFixer/Rule/MultilineParametersFixer.php
+++ /dev/null
@@ -1,182 +0,0 @@
-<?php
-
-/**
- * @copyright Copyright (C) Ibexa AS. All rights reserved.
- * @license For full copyright and license information view LICENSE file distributed with this source code.
- */
-declare(strict_types=1);
-
-namespace Ibexa\CodeStyle\PhpCsFixer\Rule;
-
-use PhpCsFixer\AbstractFixer;
-use PhpCsFixer\FixerDefinition\CodeSample;
-use PhpCsFixer\FixerDefinition\FixerDefinition;
-use PhpCsFixer\FixerDefinition\FixerDefinitionInterface;
-use PhpCsFixer\Tokenizer\Token;
-use PhpCsFixer\Tokenizer\Tokens;
-
-final class MultilineParametersFixer extends AbstractFixer
-{
-    public function getDefinition(): FixerDefinitionInterface
-    {
-        return new FixerDefinition(
-            'Methods and functions with 2+ parameters must use multiline format',
-            [
-                new CodeSample(
-                    '<?php function foo(string $a, int $b): void {}'
-                ),
-            ]
-        );
-    }
-
-    public function isCandidate(Tokens $tokens): bool
-    {
-        return $tokens->isTokenKindFound(T_FUNCTION);
-    }
-
-    protected function applyFix(
-        \SplFileInfo $file,
-        Tokens $tokens
-    ): void {
-        for ($index = $tokens->count() - 1; $index >= 0; --$index) {
-            if (!$tokens[$index]->isGivenKind(T_FUNCTION)) {
-                continue;
-            }
-
-            $openParentIndex = $tokens->getNextTokenOfKind($index, ['(']);
-            if ($openParentIndex === null) {
-                continue;
-            }
-
-            $closeParentIndex = $tokens->findBlockEnd(Tokens::BLOCK_TYPE_PARENTHESIS_BRACE, $openParentIndex);
-
-            // Count commas to determine parameter count
-            $paramCount = $this->countParameters($tokens, $openParentIndex, $closeParentIndex);
-
-            // Only process if 2+ parameters
-            if ($paramCount < 2) {
-                continue;
-            }
-
-            // Check if already multiline
-            if ($this->isMultiline($tokens, $openParentIndex, $closeParentIndex)) {
-                continue;
-            }
-
-            // Apply multiline formatting
-            $this->makeMultiline($tokens, $openParentIndex, $closeParentIndex);
-        }
-    }
-
-    private function countParameters(
-        Tokens $tokens,
-        int $start,
-        int $end
-    ): int {
-        $count = 0;
-        $depth = 0;
-
-        for ($i = $start + 1; $i < $end; ++$i) {
-            if ($tokens[$i]->equals('(') || $tokens[$i]->equals('[')) {
-                ++$depth;
-            } elseif ($tokens[$i]->equals(')') || $tokens[$i]->equals(']')) {
-                --$depth;
-            } elseif ($depth === 0 && $tokens[$i]->equals(',')) {
-                ++$count;
-            }
-        }
-
-        // If we found any commas, param count is commas + 1
-        // If no commas but there's content, it's 1 param
-        if ($count > 0) {
-            return $count + 1;
-        }
-
-        // Check if there's any non-whitespace content
-        for ($i = $start + 1; $i < $end; ++$i) {
-            if (!$tokens[$i]->isWhitespace()) {
-                return 1;
-            }
-        }
-
-        return 0;
-    }
-
-    private function isMultiline(
-        Tokens $tokens,
-        int $start,
-        int $end
-    ): bool {
-        for ($i = $start; $i <= $end; ++$i) {
-            if ($tokens[$i]->isGivenKind(T_WHITESPACE) && str_contains($tokens[$i]->getContent(), "\n")) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    private function makeMultiline(
-        Tokens $tokens,
-        int $openParentIndex,
-        int $closeParentIndex
-    ): void {
-        $indent = $this->detectIndent($tokens, $openParentIndex);
-        $lineIndent = str_repeat(' ', 4); // 4 spaces for parameters
-
-        // Add newline after opening parenthesis
-        $tokens->insertAt($openParentIndex + 1, new Token([T_WHITESPACE, "\n" . $indent . $lineIndent]));
-        ++$closeParentIndex;
-
-        // Find all commas and add newlines after them
-        $depth = 0;
-        for ($i = $openParentIndex + 1; $i < $closeParentIndex; ++$i) {
-            if ($tokens[$i]->equals('(') || $tokens[$i]->equals('[')) {
-                ++$depth;
-            } elseif ($tokens[$i]->equals(')') || $tokens[$i]->equals(']')) {
-                --$depth;
-            } elseif ($depth === 0 && $tokens[$i]->equals(',')) {
-                // Remove any whitespace after comma
-                $nextIndex = $i + 1;
-                while ($nextIndex < $closeParentIndex && $tokens[$nextIndex]->isWhitespace()) {
-                    $tokens->clearAt($nextIndex);
-                    ++$nextIndex;
-                }
-
-                // Insert newline with proper indentation
-                $tokens->insertAt($i + 1, new Token([T_WHITESPACE, "\n" . $indent . $lineIndent]));
-                $closeParentIndex = $tokens->findBlockEnd(Tokens::BLOCK_TYPE_PARENTHESIS_BRACE, $openParentIndex);
-            }
-        }
-
-        // Add newline before closing parenthesis
-        $tokens->insertAt($closeParentIndex, new Token([T_WHITESPACE, "\n" . $indent]));
-
-        // Handle the opening brace
-        $nextNonWhitespace = $tokens->getNextNonWhitespace($closeParentIndex);
-        if ($nextNonWhitespace !== null && $tokens[$nextNonWhitespace]->equals('{')) {
-            $tokens->ensureWhitespaceAtIndex($nextNonWhitespace - 1, 1, ' ');
-        }
-    }
-
-    private function detectIndent(
-        Tokens $tokens,
-        int $index
-    ): string {
-        // Look backwards to find the indentation of the current line
-        for ($i = $index - 1; $i >= 0; --$i) {
-            if ($tokens[$i]->isGivenKind(T_WHITESPACE) && str_contains($tokens[$i]->getContent(), "\n")) {
-                $lines = explode("\n", $tokens[$i]->getContent());
-
-                return end($lines);
-            }
-        }
-
-        return '';
-    }
-
-    public function getName(): string
-    {
-        return 'Ibexa/multiline_parameters';
-    }
-}
diff --git a/src/lib/PhpCsFixer/Sets/AbstractIbexaRuleSet.php b/src/lib/PhpCsFixer/Sets/AbstractIbexaRuleSet.php
index 079b8fb..4ccf3f6 100644
--- a/src/lib/PhpCsFixer/Sets/AbstractIbexaRuleSet.php
+++ b/src/lib/PhpCsFixer/Sets/AbstractIbexaRuleSet.php
@@ -9,7 +9,6 @@
 namespace Ibexa\CodeStyle\PhpCsFixer\Sets;
 
 use AdamWojs\PhpCsFixerPhpdocForceFQCN\Fixer\Phpdoc\ForceFQCNFixer;
-use Ibexa\CodeStyle\PhpCsFixer\Rule\MultilineParametersFixer;
 use PhpCsFixer\Config;
 
 abstract class AbstractIbexaRuleSet implements RuleSetInterface
@@ -27,7 +26,6 @@ public function getRules(): array
         return [
             '@PSR12' => false,
             'AdamWojs/phpdoc_force_fqcn_fixer' => true,
-            'Ibexa/multiline_parameters' => true,
             'array_syntax' => [
                 'syntax' => 'short',
             ],
@@ -206,7 +204,7 @@ public function getRules(): array
     public function buildConfig(): Config
     {
         $config = new Config();
-        $config->registerCustomFixers([new ForceFQCNFixer(), new MultilineParametersFixer()]);
+        $config->registerCustomFixers([new ForceFQCNFixer()]);
 
         $config->setRules(array_merge(
             $config->getRules(),
diff --git a/tests/lib/PhpCsFixer/InternalConfigFactoryTest.php b/tests/lib/PhpCsFixer/InternalConfigFactoryTest.php
index e85f80c..71ef115 100644
--- a/tests/lib/PhpCsFixer/InternalConfigFactoryTest.php
+++ b/tests/lib/PhpCsFixer/InternalConfigFactoryTest.php
@@ -37,22 +37,14 @@ protected function setUp(): void
 
     /**
      * @dataProvider provideRuleSetTestCases
-     *
-     * @param array{name: string, version: string, pretty_version?: string} $package
-     * @param class-string $expectedRuleSetClass
      */
-    public function testVersionBasedRuleSetSelection(
-        array $package,
-        string $expectedRuleSetClass
-    ): void {
+    public function testVersionBasedRuleSetSelection(array $package, string $expectedRuleSetClass): void
+    {
         $ruleSet = $this->createRuleSetFromPackage->invoke($this->factory, $package);
 
         self::assertInstanceOf($expectedRuleSetClass, $ruleSet);
     }
 
-    /**
-     * @return array<string, array{0: array{name: string, version: string, pretty_version?: string}, 1: class-string}>
-     */
     public function provideRuleSetTestCases(): array
     {
         return [
diff --git a/tests/lib/PhpCsFixer/Rule/MultilineParametersFixerTest.php b/tests/lib/PhpCsFixer/Rule/MultilineParametersFixerTest.php
deleted file mode 100644
index 61f536c..0000000
--- a/tests/lib/PhpCsFixer/Rule/MultilineParametersFixerTest.php
+++ /dev/null
@@ -1,116 +0,0 @@
-<?php
-
-/**
- * @copyright Copyright (C) Ibexa AS. All rights reserved.
- * @license For full copyright and license information view LICENSE file distributed with this source code.
- */
-declare(strict_types=1);
-
-namespace Ibexa\Tests\CodeStyle\PhpCsFixer\Rule;
-
-use Ibexa\CodeStyle\PhpCsFixer\Rule\MultilineParametersFixer;
-use PhpCsFixer\Tokenizer\Tokens;
-use PHPUnit\Framework\TestCase;
-use SplFileInfo;
-
-final class MultilineParametersFixerTest extends TestCase
-{
-    private MultilineParametersFixer $fixer;
-
-    protected function setUp(): void
-    {
-        $this->fixer = new MultilineParametersFixer();
-    }
-
-    /**
-     * @dataProvider provideFixCases
-     */
-    public function testFix(
-        string $input,
-        string $expected
-    ): void {
-        $tokens = Tokens::fromCode($input);
-        $this->fixer->fix(new SplFileInfo(__FILE__), $tokens);
-
-        self::assertSame($expected, $tokens->generateCode());
-    }
-
-    /**
-     * @return iterable<string, array{0: string, 1: string}>
-     */
-    public static function provideFixCases(): iterable
-    {
-        yield 'single parameter should not be modified' => [
-            '<?php
-function bar(array $package): void {
-}',
-            '<?php
-function bar(array $package): void {
-}',
-        ];
-
-        yield 'single parameter with type hints should not be modified' => [
-            '<?php
-function bar(?string $package = null): void {
-}',
-            '<?php
-function bar(?string $package = null): void {
-}',
-        ];
-
-        yield 'multiple parameters should be split' => [
-            '<?php
-function foo(array $package, string $expectedRuleSetClass): void {
-}',
-            '<?php
-function foo(
-    array $package,
-    string $expectedRuleSetClass
-): void {
-}',
-        ];
-
-        yield 'multiple parameters with type hints should be split' => [
-            '<?php
-function test(?string $foo = null, int $bar = 42): string {
-}',
-            '<?php
-function test(
-    ?string $foo = null,
-    int $bar = 42
-): string {
-}',
-        ];
-
-        yield 'constructor with properties should be split' => [
-            '<?php
-class Test {
-    public function __construct(string $foo, int $bar) {
-    }
-}',
-            '<?php
-class Test {
-    public function __construct(
-        string $foo,
-        int $bar
-    ) {
-    }
-}',
-        ];
-
-        yield 'already multiline should not be modified' => [
-            '<?php
-function test(
-    string $foo,
-    int $bar
-): void {
-}',
-            '<?php
-function test(
-    string $foo,
-    int $bar
-): void {
-}',
-        ];
-    }
-}
diff --git a/tests/lib/PhpCsFixer/Sets/expected_rules/4_6_rule_set/local_rules.php b/tests/lib/PhpCsFixer/Sets/expected_rules/4_6_rule_set/local_rules.php
index 53a74b5..cc469e9 100644
--- a/tests/lib/PhpCsFixer/Sets/expected_rules/4_6_rule_set/local_rules.php
+++ b/tests/lib/PhpCsFixer/Sets/expected_rules/4_6_rule_set/local_rules.php
@@ -195,5 +195,4 @@
     'visibility_required' => true,
     'whitespace_after_comma_in_array' => true,
     'yoda_style' => false,
-    'Ibexa/multiline_parameters' => true,
 ];
diff --git a/tests/lib/PhpCsFixer/Sets/expected_rules/4_6_rule_set/php_cs_fixer_rules.php b/tests/lib/PhpCsFixer/Sets/expected_rules/4_6_rule_set/php_cs_fixer_rules.php
index 700bc04..ca860a8 100644
--- a/tests/lib/PhpCsFixer/Sets/expected_rules/4_6_rule_set/php_cs_fixer_rules.php
+++ b/tests/lib/PhpCsFixer/Sets/expected_rules/4_6_rule_set/php_cs_fixer_rules.php
@@ -179,5 +179,4 @@
     'no_trailing_comma_in_singleline_array' => true,
     'no_unneeded_curly_braces' => true,
     'single_blank_line_before_namespace' => true,
-    'Ibexa/multiline_parameters' => true,
 ];
diff --git a/tests/lib/PhpCsFixer/Sets/expected_rules/5_0_rule_set/local_rules.php b/tests/lib/PhpCsFixer/Sets/expected_rules/5_0_rule_set/local_rules.php
index f0685d5..37e51fb 100644
--- a/tests/lib/PhpCsFixer/Sets/expected_rules/5_0_rule_set/local_rules.php
+++ b/tests/lib/PhpCsFixer/Sets/expected_rules/5_0_rule_set/local_rules.php
@@ -218,5 +218,4 @@
     'visibility_required' => true,
     'whitespace_after_comma_in_array' => true,
     'yoda_style' => false,
-    'Ibexa/multiline_parameters' => true,
 ];
diff --git a/tests/lib/PhpCsFixer/Sets/expected_rules/5_0_rule_set/php_cs_fixer_rules.php b/tests/lib/PhpCsFixer/Sets/expected_rules/5_0_rule_set/php_cs_fixer_rules.php
index e4b9f51..a50d32f 100644
--- a/tests/lib/PhpCsFixer/Sets/expected_rules/5_0_rule_set/php_cs_fixer_rules.php
+++ b/tests/lib/PhpCsFixer/Sets/expected_rules/5_0_rule_set/php_cs_fixer_rules.php
@@ -204,5 +204,4 @@
     'types_spaces' => [
         'space' => 'single',
     ],
-    'Ibexa/multiline_parameters' => true,
 ];