static void USB_Device_GetDescriptor(void);\r
                                static void USB_Device_GetStatus(void);\r
                                static void USB_Device_ClearSetFeature(void);\r
+                               \r
+                               #if !defined(NO_INTERNAL_SERIAL) && (defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))\r
+                                       static void USB_Device_GetInternalSerialDescriptor(void);\r
+                               #endif                          \r
                        #endif\r
        #endif\r
 \r