diff --git a/continuousintegration/buildtree_runner/README.md b/continuousintegration/buildtree_runner/README.md
index b312c61851844c676987df1a5838942a5d992507..6328959bc38324466d9ae2dc39c35fbc8729d3f4 100644
--- a/continuousintegration/buildtree_runner/README.md
+++ b/continuousintegration/buildtree_runner/README.md
@@ -66,7 +66,7 @@ MHVTL should then be setup by running:
 
 ```
 cd ~/CTA/continuousintegration/buildtree_runner
-./recreate_buildtree_running_environment.sh
+sudo ./recreate_buildtree_running_environment.sh
 ```
 
 ### Preparing the test instance