diff --git a/tools/Filesystem/readme.md b/tools/Filesystem/readme.md
index 918e5db..c6f9956 100644
--- a/tools/Filesystem/readme.md
+++ b/tools/Filesystem/readme.md
@@ -19,6 +19,7 @@ Both tools do exactly the same thing and work in a very similar way so use whate
 3) Copy the internal_x.vhd partition from the vhd you just mounted.
    * If the extracted vhd is named **internal_0.vhd**, you can just double click it to open it.
    * If the extracted vhd is named **internal_X.vhd** where X is anything else than 0, you'll need to merge the file with a base update first! See [Merging incremental updates](#merging-incremental-updates)
+4) Once mounted, copy the files from internal_0.vhd.
 
 ### .opt decryption and extraction