diff --git a/Terminal.php b/Terminal.php
index 9eb16aa74..0972adc6d 100644
--- a/Terminal.php
+++ b/Terminal.php
@@ -209,8 +209,7 @@ private static function readFromProcess(string|array $command): ?string
 
         $cp = \function_exists('sapi_windows_cp_set') ? sapi_windows_cp_get() : 0;
 
-        $process = proc_open($command, $descriptorspec, $pipes, null, null, ['suppress_errors' => true]);
-        if (!\is_resource($process)) {
+        if (!$process = proc_open($command, $descriptorspec, $pipes, null, null, ['suppress_errors' => true])) {
             return null;
         }
 
diff --git a/Tests/Formatter/OutputFormatterTest.php b/Tests/Formatter/OutputFormatterTest.php
index f62fa0889..477f1bdf6 100644
--- a/Tests/Formatter/OutputFormatterTest.php
+++ b/Tests/Formatter/OutputFormatterTest.php
@@ -199,7 +199,7 @@ public static function provideInlineStyleOptionsCases()
         ];
     }
 
-    public function provideInlineStyleTagsWithUnknownOptions()
+    public static function provideInlineStyleTagsWithUnknownOptions()
     {
         return [
             ['<options=abc;>', 'abc'],