1 files changed, 2 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 815a251..cbd2f49 100644
--- a/Makefile
+++ b/Makefile
@@ -39,7 +39,8 @@ ALL_EGG_INFOS =                    \
 CONTAINER_PREREQUISITES = container.scm $(ALL_EGG_INFOS) hydrilla-wsgi.py \
 	exim.conf Makefile.local
 
-TEST_ROOT_DIR = "/tmp/$$(pwd | sed 's|/|!|g')"'!!test-root/current'
+PWD_DERIVED_DIRECTORY_NAME != pwd | sed 's|[/'\'']|!|g'
+TEST_ROOT_DIR = '/tmp/$(PWD_DERIVED_DIRECTORY_NAME)!!test-root/current'
 
 all: | container-runner.touchfile log sample-malcontent