diff --git a/Exception/MappingException.php b/Exception/MappingException.php
index bc4b1d6..1ffef94 100644
--- a/Exception/MappingException.php
+++ b/Exception/MappingException.php
@@ -23,6 +23,9 @@ public static function missingHeaderOption(): self
         return new self('When using HeaderReference, "header" option is required');
     }
 
+    /**
+     * @param array<string> $columns
+     */
     public static function ambiguousHeader(string $header, array $columns): self
     {
         return new self(sprintf('Ambiguous header "%1$s" found, used in columns "%2$s"', $header, implode('", "', $columns)));
diff --git a/Test/FilterIteratorTest.php b/Test/FilterIteratorTest.php
index a8402da..b7e9ccc 100644
--- a/Test/FilterIteratorTest.php
+++ b/Test/FilterIteratorTest.php
@@ -29,7 +29,10 @@ public function testCanFilterOutIteratorItems(): void
     {
         $iterator = new FakeIterator([1, 2, 3, 4, 5]);
         $filter = new FilterIterator($iterator, static function (object $item): bool {
-            /** @var int $scalar */
+            /**
+             * @var int $scalar
+             * @phpstan-ignore-next-line
+             */
             $scalar = $item->scalar;
 
             return $scalar % 2 === 0;
@@ -42,7 +45,10 @@ public function testCallbackReturnValueMustBeBool(): void
     {
         $iterator = new FakeIterator(['ba', 'abba', 'boo', 'bae', 'nba', 'ab', 'ban']);
         $filter = new FilterIterator($iterator, static function (object $item): bool {
-            /** @var string $scalar */
+            /**
+             * @var string $scalar
+             * @phpstan-ignore-next-line
+             */
             $scalar = $item->scalar;
 
             return false !== mb_strpos($scalar, 'ba');
diff --git a/Test/FixtureTrait.php b/Test/FixtureTrait.php
index 5f234e8..ce151d2 100644
--- a/Test/FixtureTrait.php
+++ b/Test/FixtureTrait.php
@@ -28,6 +28,7 @@ private function invalidFixture(string $name): \SplFileObject
         return new class(__DIR__.'/resources/fixtures/'.$name) extends \SplFileObject {
             /**
              * @psalm-suppress ImplementedReturnTypeMismatch Invalid by design
+             * @phpstan-ignore-next-line
              */
             public function getRealPath(): bool
             {
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index a8ec9dd..0ae8962 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -12,9 +12,3 @@ parameters:
     excludes_analyse:
         - var/
         - vendor/
-    ignoreErrors:
-        - message: '#Access to an undefined property object\:\:\$scalar\.#'
-          path: %currentWorkingDirectory%/Test/FilterIteratorTest.php
-        - message: '#Return type \(bool\) of method class@anonymous\/Test\/FixtureTrait\.php:28::getRealPath\(\) should be covariant with return type \(string\|false\) of method SplFileInfo::getRealPath\(\)#'
-          paths:
-            - %currentWorkingDirectory%/Test/Functional/FunctionalTestCase.php
diff --git a/psalm.xml.dist b/psalm.xml.dist
index 5e7c26d..a9f6071 100644
--- a/psalm.xml.dist
+++ b/psalm.xml.dist
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <psalm xmlns="https://getpsalm.org/schema/config"
        cacheDirectory="var/psalm"
-       totallyTyped="true">
+       errorLevel="1">
     <projectFiles>
         <directory name="."/>
         <ignoreFiles>