--- a/test/langtools/tools/javac/switchexpr/ParseIncomplete.java	Mon Nov 11 17:43:10 2019 -0800
+++ b/test/langtools/tools/javac/switchexpr/ParseIncomplete.java	Tue Nov 12 06:32:13 2019 +0000
@@ -68,7 +68,7 @@
             StringWriter out = new StringWriter();
             try {
                 JavacTask ct = (JavacTask) tool.getTask(out, null, noErrors,
-                    List.of("-XDdev", "--enable-preview", "-source", sourceVersion), null,
+                    List.of("-XDdev"), null,
                     Arrays.asList(new MyFileObject(code)));
                 ct.parse().iterator().next();
             } catch (Throwable t) {