diff --git a/Tests/cachefileTest.php b/Tests/cachefileTest.php
index effc234..90e93a0 100644
--- a/Tests/cachefileTest.php
+++ b/Tests/cachefileTest.php
@@ -10,6 +10,7 @@ class test_cachefile extends PHPUnit_Framework_TestCase
   {
     // Removing the cache file if it previously exists
     $c = new cachefile ();
+    $c->directory = "/tmp/cache";
     $res = $c->delete ("id");
   }
 
@@ -17,6 +18,7 @@ class test_cachefile extends PHPUnit_Framework_TestCase
   public function testRead1 ()
   {
     $c = new cachefile ();
+    $c->directory = "/tmp/cache";
     $res = $c->read ("id");
     $this->assertFalse ($res);
   }
@@ -25,6 +27,7 @@ class test_cachefile extends PHPUnit_Framework_TestCase
   public function testWrite1 ()
   {
     $c = new cachefile ();
+    $c->directory = "/tmp/cache";
     $res = $c->write ("id","DATA_TO_STORE", 3);
     $this->assertTrue ($res);
   }
@@ -33,6 +36,7 @@ class test_cachefile extends PHPUnit_Framework_TestCase
   public function testRead2 ()
   {
     $c = new cachefile ();
+    $c->directory = "/tmp/cache";
     $res = $c->read ("id");
     $this->assertEquals ("DATA_TO_STORE", $res);
   }
@@ -47,6 +51,7 @@ class test_cachefile extends PHPUnit_Framework_TestCase
   public function testRead3 ()
   {
     $c = new cachefile ();
+    $c->directory = "/tmp/cache";
     $res = $c->read ("id");
     $this->assertFalse ($res);
   }
@@ -55,6 +60,7 @@ class test_cachefile extends PHPUnit_Framework_TestCase
   public function testWrite2 ()
   {
     $c = new cachefile ();
+    $c->directory = "/tmp/cache";
     $res = $c->write ("id","DATA_TO_STORE", 30);
     $this->assertTrue ($res);
   }
@@ -62,13 +68,14 @@ class test_cachefile extends PHPUnit_Framework_TestCase
   // Create stale lock
   public function testLock1 ()
   {
-    touch ("cache/".sha1 ("id").".lock");
+    touch ("/tmp/cache/".sha1 ("id").".lock");
   }
 
   // Previous cache in time file but lock : return content after lock timeout
   public function testRead4 ()
   {
     $c = new cachefile ();
+    $c->directory = "/tmp/cache";
     $res = $c->read ("id");
     $this->assertEquals ("DATA_TO_STORE", $res);
   }
@@ -76,6 +83,7 @@ class test_cachefile extends PHPUnit_Framework_TestCase
   public function testDel1 ()
   {
     $c = new cachefile ();
+    $c->directory = "/tmp/cache";
     $res = $c->delete ("id");
   }
 }