diff --git a/plugins/TestingList.java b/plugins/TestingList.java
index 7ef7ab9..55aafbe 100644
--- a/plugins/TestingList.java
+++ b/plugins/TestingList.java
@@ -40,6 +40,7 @@ import java.lang.reflect.Method;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
@@ -2418,7 +2419,7 @@ public class TestingList extends Panel {
                 } else { // if nothing found in this directory, see if there is a subdireactory
                     try {
                         System.out.println("see subdirs of deviceInList:" + deviceInList.getPath().toString());
-                        System.out.println("subdirs:" + deviceInList.listFiles().toString());
+                        System.out.println("subdirs:" + Arrays.toString(deviceInList.listFiles()));
                         Collections.addAll(listOfDevices, deviceInList.listFiles());
                     } catch (Exception ex) {
                         Logger.getLogger(TestingList.class.getName()).log(Level.SEVERE, null, ex);