diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index e844cde83..0057d449f 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -3,7 +3,7 @@
 set_include_path(
     '../include' . PATH_SEPARATOR
     . '../library' . PATH_SEPARATOR
-    . '../'
+    . '../' . PATH_SEPARATOR . './'
 );
 define('\UNIT_TESTING', 1);
 require_once('boot.php');