1 files changed, 2 insertions, 3 deletions
diff --git a/luni/src/main/java/java/security/SecureRandom.java b/luni/src/main/java/java/security/SecureRandom.java
index 68a2917..6ed631c 100644
--- a/luni/src/main/java/java/security/SecureRandom.java
+++ b/luni/src/main/java/java/security/SecureRandom.java
@@ -88,7 +88,6 @@ public class SecureRandom extends Random {
      */
     public SecureRandom() {
         super(0);
-        Services.refresh();
         Provider.Service service = Services.getSecureRandomService();
         if (service == null) {
             this.provider = null;
@@ -154,7 +153,7 @@ public class SecureRandom extends Random {
      */
     public static SecureRandom getInstance(String algorithm) throws NoSuchAlgorithmException {
         if (algorithm == null) {
-            throw new NullPointerException();
+            throw new NullPointerException("algorithm == null");
         }
         Engine.SpiAndProvider sap = ENGINE.getInstance(algorithm, null);
         return new SecureRandom((SecureRandomSpi) sap.spi, sap.provider,
@@ -213,7 +212,7 @@ public class SecureRandom extends Random {
             throw new IllegalArgumentException();
         }
         if (algorithm == null) {
-            throw new NullPointerException();
+            throw new NullPointerException("algorithm == null");
         }
         Object spi = ENGINE.getInstance(algorithm, provider, null);
         return new SecureRandom((SecureRandomSpi) spi, provider, algorithm);