1 files changed, 4 insertions, 0 deletions

diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 2d675c9a..3508a7b1 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -30,3 +30,7 @@ require_once 'tests/utils/ReferenceLinkDB.php';
 require_once 'tests/utils/ReferenceSessionIdHashes.php';
 
 \ReferenceSessionIdHashes::genAllHashes();
+
+if (!defined('SHAARLI_MUTEX_FILE')) {
+    define('SHAARLI_MUTEX_FILE', __FILE__);
+}