1 files changed, 2 insertions, 2 deletions
diff --git a/luni/src/main/java/java/security/KeyFactory.java b/luni/src/main/java/java/security/KeyFactory.java
index 554885a..8d39003 100644
--- a/luni/src/main/java/java/security/KeyFactory.java
+++ b/luni/src/main/java/java/security/KeyFactory.java
@@ -76,7 +76,7 @@ public class KeyFactory {
     public static KeyFactory 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 KeyFactory((KeyFactorySpi) sap.spi, sap.provider, algorithm);
@@ -130,7 +130,7 @@ public class KeyFactory {
             throw new IllegalArgumentException();
         }
         if (algorithm == null) {
-            throw new NullPointerException();
+            throw new NullPointerException("algorithm == null");
         }
         Object spi = ENGINE.getInstance(algorithm, provider, null);
         return new KeyFactory((KeyFactorySpi) spi, provider, algorithm);