Bugfix: reference to home path was wrong.

Change-Id: I32aff467270ddc29509485b6f0469f75af035106
diff --git a/tools/ci/clean-disk.sh b/tools/ci/clean-disk.sh
index 643ce07..e86d5a3 100755
--- a/tools/ci/clean-disk.sh
+++ b/tools/ci/clean-disk.sh
@@ -5,7 +5,7 @@
 #Set default for disk utilisation
 DMAX=${1:-80%}
 #Retrieve disk usages in percentage
-DSIZE=$(df -hlP ~/jenkins | sed 1d | awk '{print $5}')
+DSIZE=$(df -hlP /home/jenkins | sed 1d | awk '{print $5}')
 
 if [[ $DSIZE>$DMAX ]]; then
 		echo $NODE_NAME": Disk over "$DMAX" Clean up needed on node."