diff --git a/README.md b/README.md
index 1a5f326d019b5d2035dbcaab92f571881b7bd0d1..2cd5bf0de0964d4810693eebccd236e5a7fafa14 100644
--- a/README.md
+++ b/README.md
@@ -294,7 +294,7 @@ The best way to debug your builds locally is to run them within the same Docker
 ```bash
 ~ > git clone https://:@gitlab.cern.ch:8443/linuxsupport/myrpm.git
 ...
-~ > docker run --rm -it -v ~/myrpm:/build gitlab-registry.cern.ch/linuxsupport/rpmci/builder-c8:latest
+~ > docker run --rm -it -v ~/myrpm:/build:z gitlab-registry.cern.ch/linuxsupport/rpmci/builder-c8:latest
 ...
 [root@99369f9e7a22 /]# cd /build/
 [root@99369f9e7a22 build]# yum-builddep -y *.spec