diff --git a/build-scripts/prepare-testmachine-chroot b/build-scripts/prepare-testmachine-chroot
index cdd89454f..87f9ea1e8 100755
--- a/build-scripts/prepare-testmachine-chroot
+++ b/build-scripts/prepare-testmachine-chroot
@@ -55,7 +55,7 @@ fi
 
 # Create and set permissions for essential directories inside chroot
 for d in tmp var/tmp run root; do
-    sudo mkdir -p $d
+    sudo mkdir -p "${CHROOT_ROOT}${d}"
 done
 sudo chmod 1777 "${CHROOT_ROOT}tmp"
 sudo chmod 1777 "${CHROOT_ROOT}var/tmp"