diff --git a/hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KeyAuthorizationKeyProvider.java b/hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KeyAuthorizationKeyProvider.java
index 868db765c2..101591b031 100644
--- a/hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KeyAuthorizationKeyProvider.java
+++ b/hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KeyAuthorizationKeyProvider.java
@@ -402,7 +402,7 @@ public class KeyAuthorizationKeyProvider extends KeyProviderCryptoExtension {
 
   @Override
   public String toString() {
-    return provider.toString();
+    return this.getClass().getName()+": "+provider.toString();
   }
 
 }