diff --git a/README.md b/README.md
index 894d5d7..e42cf59 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ You will also need to apply the follwing changes :
 
 ### pfSense GUI
 - Go to the folder `/tools/templates/pkg_repos/` in the branch you would like to build (`master`for dev version, `RELENG_2_5_0` for stable version) and change `pfSense` to `libreSense` in the file names (e.g., `pfSense-repo.abi => libreSense-repo.abi`)
-- Edit the file `/src/etc/inc/globals.inc` : replace the content of `product_name` by `libreSense`.
+- Edit the file `/src/etc/inc/globals.inc` : replace the content of `product_name` by `libreSense`, and the content of `pkg_prefix` by `libreSense-pkg-`
 - In the folder `/src/usr/local/share/`, rename the folder `pfSense` to `libreSense`.
 - In the folder `/src/etc/`, rename the files `pfSense-ddb.conf` and `pfSense-devd.conf` to `libreSense-ddb.conf` and `libreSense-devd.conf`