diff --git a/Process.php b/Process.php
index 60022bfd..49192eeb 100644
--- a/Process.php
+++ b/Process.php
@@ -1485,8 +1485,8 @@ private function resetProcessData()
         $this->exitcode = null;
         $this->fallbackStatus = [];
         $this->processInformation = null;
-        $this->stdout = fopen('php://temp/maxmemory:'.(1024 * 1024), 'w+b');
-        $this->stderr = fopen('php://temp/maxmemory:'.(1024 * 1024), 'w+b');
+        $this->stdout = fopen('php://temp/maxmemory:'.(1024 * 1024), 'w+');
+        $this->stderr = fopen('php://temp/maxmemory:'.(1024 * 1024), 'w+');
         $this->process = null;
         $this->latestSignal = null;
         $this->status = self::STATUS_READY;