--- a/test/jdk/java/security/SignedObject/Chain.java	Tue May 22 20:36:31 2018 +0800
+++ b/test/jdk/java/security/SignedObject/Chain.java	Tue May 22 16:36:02 2018 -0700
@@ -203,8 +203,9 @@
                 signature = Signature.getInstance(test.sigAlg.name);
                 kpg = KeyPairGenerator.getInstance(test.keyAlg.name);
             }
-
-            signature.setParameter(test.sigParams);
+            if (test.sigParams != null) {
+                signature.setParameter(test.sigParams);
+            }
 
             for (int j=0; j < N; j++) {
                 if (test.keySize != -1) {