diff --git a/psalm.xml b/psalm.xml
index e7c5ea3..d3f2f25 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -34,5 +34,8 @@
                  <referencedMethod name="Erusev\Parsedown\Parsing\Lines::trailingBlankLines" />
             </errorLevel>
         </PossiblyUnusedMethod>
+        <PropertyNotSetInConstructor>
+            <errorLevel type="suppress"><directory name="tests" /></errorLevel>
+        </PropertyNotSetInConstructor>
     </issueHandlers>
 </psalm>
diff --git a/tests/CommonMarkTestStrict.php b/tests/CommonMarkTestStrict.php
index f83a058..13cace0 100644
--- a/tests/CommonMarkTestStrict.php
+++ b/tests/CommonMarkTestStrict.php
@@ -35,10 +35,6 @@ class CommonMarkTestStrict extends TestCase
             InlineTypes::initial()->removing([Url::class]),
         ]));
 
-        $this->backupGlobals = false;
-        $this->backupStaticAttributes = false;
-        $this->runTestInSeparateProcess = false;
-
         parent::__construct($name, $data, $dataName);
     }
 
diff --git a/tests/ParsedownTest.php b/tests/ParsedownTest.php
index 03bf8aa..053521c 100755
--- a/tests/ParsedownTest.php
+++ b/tests/ParsedownTest.php
@@ -24,10 +24,6 @@ class ParsedownTest extends TestCase
     {
         $this->dirs = $this->initDirs();
 
-        $this->backupGlobals = false;
-        $this->backupStaticAttributes = false;
-        $this->runTestInSeparateProcess = false;
-
         parent::__construct($name, $data, $dataName);
     }