diff --git a/src/main/java/de/ailis/usb4java/DeviceManager.java b/src/main/java/de/ailis/usb4java/DeviceManager.java
index 9d44408..70d91d9 100644
--- a/src/main/java/de/ailis/usb4java/DeviceManager.java
+++ b/src/main/java/de/ailis/usb4java/DeviceManager.java
@@ -179,7 +179,7 @@ final class DeviceManager
         
         if (hub.isRootUsbHub())
         {
-            RootHub rootHub = (RootHub) hub;
+            final RootHub rootHub = (RootHub) hub;
             scanRemovedDevices(rootHub);
             scanNewDevices(rootHub, null);
         }