\r
                #include <string.h>\r
 \r
+       /* Preprocessor Checks: */\r
+               #if !defined(__INCLUDE_FROM_HID_DRIVER)\r
+                       #error Do not include this file directly. Include LUFA/Drivers/Class/HID.h instead.\r
+               #endif\r
+               \r
        /* Macros: */\r
                /** HID Class Specific Request to get the current HID report from the device. */\r
                #define REQ_GetReport                   0x01\r