diff --git a/Create-DevTerm-CM3-OS-image-from-scratch.md b/Create-DevTerm-CM3-OS-image-from-scratch.md
index 3d3a0b1..25b6e30 100644
--- a/Create-DevTerm-CM3-OS-image-from-scratch.md
+++ b/Create-DevTerm-CM3-OS-image-from-scratch.md
@@ -84,7 +84,7 @@ sudo rm -rf root/.bash_history
 cd -
 sudo umount /mnt/p2/boot
 sudo umount /mnt/p2
-
+sudo losetup -D /dev/loop0 #assume loop0
 ```
 
 ### Flash the image to SD card