diff --git a/test/TEST-37-RUNTIMEDIRECTORYPRESERVE/test.sh b/test/TEST-37-RUNTIMEDIRECTORYPRESERVE/test.sh
index 2c5ad430b5..44f77bc6a0 100755
--- a/test/TEST-37-RUNTIMEDIRECTORYPRESERVE/test.sh
+++ b/test/TEST-37-RUNTIMEDIRECTORYPRESERVE/test.sh
@@ -15,21 +15,8 @@ test_setup() {
 
         setup_basic_environment
         mask_supporting_services
-
-        # setup the testsuite service
-        cat >$initdir/etc/systemd/system/testsuite.service <<EOF
-[Unit]
-Description=Testsuite service
-
-[Service]
-ExecStart=/bin/bash -x /testsuite.sh
-Type=oneshot
-EOF
-        cp testsuite.sh $initdir/
-
-        setup_testsuite
-    ) || return 1
+    )
     setup_nspawn_root
 }
 
-do_test "$@"
+do_test "$@" 37
diff --git a/test/units/testsuite-37.service b/test/units/testsuite-37.service
new file mode 100644
index 0000000000..68c805985d
--- /dev/null
+++ b/test/units/testsuite-37.service
@@ -0,0 +1,6 @@
+[Unit]
+Description=TEST-37-RUNTIMEDIRECTORYPRESERVE
+
+[Service]
+ExecStart=/usr/lib/systemd/tests/testdata/units/%N.sh
+Type=oneshot
diff --git a/test/TEST-37-RUNTIMEDIRECTORYPRESERVE/testsuite.sh b/test/units/testsuite-37.sh
similarity index 100%
rename from test/TEST-37-RUNTIMEDIRECTORYPRESERVE/testsuite.sh
rename to test/units/testsuite-37.sh