diff --git a/test/crypt-forgery.php b/test/crypt-forgery.php
index a5802cf78..9ef7ebf19 100644
--- a/test/crypt-forgery.php
+++ b/test/crypt-forgery.php
@@ -27,7 +27,7 @@ namespace RainLoop {
 namespace {
 	// Enable SnappyMail Api and include index file
 	$_ENV['SNAPPYMAIL_INCLUDE_AS_API'] = true;
-	require '../index.php';
+	require __DIR__ . '/../index.php';
 //	define('APP_SALT', 'test-salt-'.bin2hex(random_bytes(8)));
 
 	$_COOKIE['smctoken'] = base64_encode(random_bytes(16));
diff --git a/test/header-injection.php b/test/header-injection.php
index 187b6a346..88943ca5c 100644
--- a/test/header-injection.php
+++ b/test/header-injection.php
@@ -3,7 +3,7 @@
 // Run with: php test/header-injection.php
 // Enable SnappyMail Api and include index file
 $_ENV['SNAPPYMAIL_INCLUDE_AS_API'] = true;
-require '../index.php';
+require __DIR__ . '/../index.php';
 
 function check(bool $condition, string $message): void
 {
diff --git a/test/raw-inline-type.php b/test/raw-inline-type.php
index 21431549f..dce5af4c3 100644
--- a/test/raw-inline-type.php
+++ b/test/raw-inline-type.php
@@ -3,7 +3,7 @@
 // Run with: php test/raw-inline-type.php
 // Enable SnappyMail Api and include index file
 $_ENV['SNAPPYMAIL_INCLUDE_AS_API'] = true;
-require '../index.php';
+require __DIR__ . '/../index.php';
 
 function check(bool $condition, string $message): void
 {
diff --git a/test/smime-verify.php b/test/smime-verify.php
index 73f7d8ccf..6da2dc8e5 100644
--- a/test/smime-verify.php
+++ b/test/smime-verify.php
@@ -1,7 +1,7 @@
 <?php
 // Enable SnappyMail Api and include index file
 $_ENV['SNAPPYMAIL_INCLUDE_AS_API'] = true;
-require '../index.php';
+require __DIR__ . '/../index.php';
 
 function check(bool $condition, string $message): void
 {
diff --git a/test/sso.php b/test/sso.php
index 604cb55a5..72c0e1deb 100644
--- a/test/sso.php
+++ b/test/sso.php
@@ -2,7 +2,7 @@
 
 // Enable SnappyMail Api and include index file
 $_ENV['SNAPPYMAIL_INCLUDE_AS_API'] = true;
-require '../index.php';
+require __DIR__ . '/../index.php';
 
 /**
  * Get SSO hash