diff --git a/tools/apply-test.sh b/tools/apply-test.sh
index 2de7ad05ea..dc2cce26fd 100755
--- a/tools/apply-test.sh
+++ b/tools/apply-test.sh
@@ -79,6 +79,7 @@ sed -i -e '/^\}$/d' applytest/puppetapplytest*
 # This gives us the node {} internal contents.
 sed -i -e 's/^[^][:space:]$]/#&/g' applytest/prep00 applytest/puppetapplytest*
 sed -i -e 's@hiera(.\([^.]*\).,\([^)]*\))@\2@' applytest/prep00 applytest/puppetapplytest*
+sed -i -e "s@hiera(.\([^.]*\).)@'\1NoDefault'@" applytest/prep00 applytest/puppetapplytest*
 mv applytest/prep00 applytest/head  # These are the top-level variables defined in site.pp
 
 if [[ `lsb_release -i -s` == 'CentOS' ]]; then