diff --git a/php/elFinderVolumeBox.class.php b/php/elFinderVolumeBox.class.php
index b3371abdb..3e829e126 100644
--- a/php/elFinderVolumeBox.class.php
+++ b/php/elFinderVolumeBox.class.php
@@ -734,6 +734,21 @@ class elFinderVolumeBox extends elFinderVolumeDriver
         return true;
     }
 
+    /**
+     * Return debug info for client.
+     *
+     * @return array
+     **/
+    public function debug()
+    {
+        $res = parent::debug();
+        if (! empty($this->options['accessToken'])) {
+            $res['accessToken'] = $this->options['accessToken'];
+        }
+    
+        return $res;
+    }
+
     /*********************************************************************/
     /*                        INIT AND CONFIGURE                         */
     /*********************************************************************/
diff --git a/php/elFinderVolumeOneDrive.class.php b/php/elFinderVolumeOneDrive.class.php
index d57d9dbba..3052347a2 100644
--- a/php/elFinderVolumeOneDrive.class.php
+++ b/php/elFinderVolumeOneDrive.class.php
@@ -685,7 +685,22 @@ class elFinderVolumeOneDrive extends elFinderVolumeDriver
 
         return true;
     }
-
+    
+    /**
+     * Return debug info for client.
+     *
+     * @return array
+     **/
+    public function debug()
+    {
+        $res = parent::debug();
+        if (! empty($this->options['accessToken'])) {
+            $res['accessToken'] = $this->options['accessToken'];
+        }
+    
+        return $res;
+    }
+    
     /*********************************************************************/
     /*                        INIT AND CONFIGURE                         */
     /*********************************************************************/