diff --git a/test/Compress/ZipTest.php b/test/Compress/ZipTest.php
index 0a399ff4..265a8558 100644
--- a/test/Compress/ZipTest.php
+++ b/test/Compress/ZipTest.php
@@ -22,7 +22,7 @@ public function setUp()
             $this->markTestSkipped('This adapter needs the zip extension');
         }
 
-        $this->tmp = sys_get_temp_dir() . '/' . str_replace('\\', '_', __CLASS__);
+        $this->tmp = sys_get_temp_dir() . DIRECTORY_SEPARATOR . str_replace('\\', '_', __CLASS__);
 
         $files = array(
             $this->tmp . '/compressed.zip',
diff --git a/test/File/RenameUploadTest.php b/test/File/RenameUploadTest.php
index eb0d2cdc..92128ebf 100644
--- a/test/File/RenameUploadTest.php
+++ b/test/File/RenameUploadTest.php
@@ -66,9 +66,9 @@ public function setUp()
         mkdir($this->_filesPath);
         mkdir($this->_newDir);
 
-        $this->_oldFile    = $this->_filesPath . '/testfile.txt';
-        $this->_newFile    = $this->_filesPath . '/newfile.xml';
-        $this->_newDirFile = $this->_newDir . '/testfile.txt';
+        $this->_oldFile    = $this->_filesPath . DIRECTORY_SEPARATOR . 'testfile.txt';
+        $this->_newFile    = $this->_filesPath . DIRECTORY_SEPARATOR . 'newfile.xml';
+        $this->_newDirFile = $this->_newDir . DIRECTORY_SEPARATOR . 'testfile.txt';
 
         touch($this->_oldFile);
     }