--- old/test/hotspot/jtreg/runtime/appcds/jigsaw/PatchModule/PatchJavaBase.java	2018-04-08 23:15:41.367848128 -0700
+++ new/test/hotspot/jtreg/runtime/appcds/jigsaw/PatchModule/PatchJavaBase.java	2018-04-08 23:15:41.079820985 -0700
@@ -62,7 +62,8 @@
             TestCommon.dump(null, null,
                 "--patch-module=java.base=" + moduleJar,
                 "PatchMain", "java.lang.NewClass");
-        TestCommon.checkDump(output, "Loading classes to share");
+        output.shouldHaveExitValue(1)
+              .shouldContain("Cannot use the following option when dumping the shared archive: --patch-module");
 
         TestCommon.run(
             "-XX:+UnlockDiagnosticVMOptions",