diff --git a/CDash_Env_MpdRoot.sh b/CDash_Env_MpdRoot.sh
old mode 100644
new mode 100755
index 404163c1d98ee0dcf88f566e4a02d7308dafd78e..696036ca1642638e768fc0663601c2b6fb25c69d
--- a/CDash_Env_MpdRoot.sh
+++ b/CDash_Env_MpdRoot.sh
@@ -8,7 +8,7 @@ fi
 
 export SIMPATH=/opt/fairsoft/install
 export SOURCEDIR=$CDASHUSERPATH
-export BUILDDIR=$HOME/CDASH/mpdroot_build_$(uname -n)
+export BUILDDIR=$HOME/CDASH/mpdroot_build_$(hostname -s)
 export LINUX_FLAVOUR=$(uname -o)
 export FAIRSOFT_VERSION=may16