diff --git a/src/main/java/de/ailis/usb4java/topology/LibUsbDevice.java b/src/main/java/de/ailis/usb4java/topology/LibUsbDevice.java
index 5f0bfea..2e59ebd 100644
--- a/src/main/java/de/ailis/usb4java/topology/LibUsbDevice.java
+++ b/src/main/java/de/ailis/usb4java/topology/LibUsbDevice.java
@@ -713,7 +713,7 @@ public abstract class LibUsbDevice implements UsbDevice
      */
 
     @Override
-    public String toString()
+    public final String toString()
     {
         return this.device.toString();
     }