diff --git a/tests/TestCase.php b/tests/TestCase.php
index 748a608a..22252347 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -59,7 +59,7 @@ protected function mockAdapter(LoopInterface $loop = null)
 
     public function setUp()
     {
-        $this->tmpDir = sys_get_temp_dir() . DIRECTORY_SEPARATOR . uniqid('react-filesystem-tests-') . DIRECTORY_SEPARATOR;
+        $this->tmpDir = sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'react-filesystem-tests' . DIRECTORY_SEPARATOR . uniqid('', true) . DIRECTORY_SEPARATOR;
         mkdir($this->tmpDir, 0777, true);
         $this->startTime = time();
     }
diff --git a/travis-init.sh b/travis-init.sh
index 1d338e48..485ebd98 100755
--- a/travis-init.sh
+++ b/travis-init.sh
@@ -1,5 +1,8 @@
 #!/bin/bash
 
+mkdir `php -r "echo sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'react-filesystem-tests' . DIRECTORY_SEPARATOR;"`
+chmod 0777 -Rfv `php -r "echo sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'react-filesystem-tests' . DIRECTORY_SEPARATOR;"`
+
 if [[ "$TRAVIS_PHP_VERSION" != "hhvm" ]]; then
     # install 'eio' PHP extension (does not support nightly)
     if [[ "$TRAVIS_PHP_VERSION" != "nightly" ]]; then