diff --git a/_posts/2015-08-18-multiboot-kernel.md b/_posts/2015-08-18-multiboot-kernel.md
index 310d8ddb..7538bc6e 100644
--- a/_posts/2015-08-18-multiboot-kernel.md
+++ b/_posts/2015-08-18-multiboot-kernel.md
@@ -202,6 +202,7 @@ Now we can create a bootable image using the command:
 ```
 grub-mkrescue -o os.iso isofiles
 ```
+_Note_: If you're getting an error about your `xorriso` version, make sure `xorriso` is installed.
 
 ## Booting
 Now it's time to boot our OS. We will use [QEMU]: