diff --git a/src/main/java/de/ailis/usb4java/libusb/LibUsb.java b/src/main/java/de/ailis/usb4java/libusb/LibUsb.java
index 3fae444..d08ab4b 100644
--- a/src/main/java/de/ailis/usb4java/libusb/LibUsb.java
+++ b/src/main/java/de/ailis/usb4java/libusb/LibUsb.java
@@ -1394,7 +1394,7 @@ public final class LibUsb
      *
      * @return buffer size in bytes
      */
-    public static native int deviceDescriptorStructSize();
+    static native int deviceDescriptorStructSize();
 
     /**
      * Retrieve a string descriptor in C style ASCII.