diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
index 84a6d5f..0ce924a 100644
--- a/include/scsi/scsi.h
+++ b/include/scsi/scsi.h
@@ -429,10 +429,12 @@ #define SCSI_IOCTL_GET_BUS_NUMBER	0x5386
 /* Used to obtain the PCI location of a device */
 #define SCSI_IOCTL_GET_PCI		0x5387
 
+#ifdef __KERNEL__
 /* Pull a u32 out of a SCSI message (using BE SCSI conventions) */
 static inline u32 scsi_to_u32(u8 *ptr)
 {
 	return (ptr[0]<<24) + (ptr[1]<<16) + (ptr[2]<<8) + ptr[3];
 }
+#endif
 
 #endif /* _SCSI_SCSI_H */