diff --git a/pulsar-client/src/main/java/com/yahoo/pulsar/client/impl/BatchMessageIdImpl.java b/pulsar-client/src/main/java/com/yahoo/pulsar/client/impl/BatchMessageIdImpl.java
index 89a0b7f38766e43f5706fb05b535518a70b8132c..1ecc328756faf41d6b0e13fb7d7d365a68e43d57 100644
--- a/pulsar-client/src/main/java/com/yahoo/pulsar/client/impl/BatchMessageIdImpl.java
+++ b/pulsar-client/src/main/java/com/yahoo/pulsar/client/impl/BatchMessageIdImpl.java
@@ -62,8 +62,7 @@ public class BatchMessageIdImpl extends MessageIdImpl implements Comparable<Mess
 
     @Override
     public String toString() {
-        return Objects.toStringHelper(MessageIdImpl.class).add("ledgerId", ledgerId).add("entryId", entryId)
-                .add("partitionIndex", partitionIndex).add("batchIndex", batchIndex).toString();
+        return String.format("%d:%d:%d:%d", ledgerId, entryId, partitionIndex, batchIndex);
     }
 
     // Serialization
diff --git a/pulsar-client/src/main/java/com/yahoo/pulsar/client/impl/MessageIdImpl.java b/pulsar-client/src/main/java/com/yahoo/pulsar/client/impl/MessageIdImpl.java
index a73c1f8a18bc97e4934f4d1dcf1021c67a237a38..f467e6151fa1d3b16bb3dbe3294e70561ca45f75 100644
--- a/pulsar-client/src/main/java/com/yahoo/pulsar/client/impl/MessageIdImpl.java
+++ b/pulsar-client/src/main/java/com/yahoo/pulsar/client/impl/MessageIdImpl.java
@@ -77,8 +77,7 @@ public class MessageIdImpl implements MessageId, Comparable<MessageIdImpl> {
 
     @Override
     public String toString() {
-        return Objects.toStringHelper(MessageIdImpl.class).add("ledgerId", ledgerId).add("entryId", entryId)
-                .add("partitionIndex", partitionIndex).toString();
+        return String.format("%d:%d:%d", ledgerId, entryId, partitionIndex);
     }
 
     // / Serialization
diff --git a/pulsar-client/src/test/java/com/yahoo/pulsar/client/api/MessageIdTest.java b/pulsar-client/src/test/java/com/yahoo/pulsar/client/api/MessageIdTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..9060e749f4ca7602cb6fddd060b158a3be5988c7
--- /dev/null
+++ b/pulsar-client/src/test/java/com/yahoo/pulsar/client/api/MessageIdTest.java
@@ -0,0 +1,46 @@
+/**
+ * Copyright 2016 Yahoo Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.yahoo.pulsar.client.api;
+
+import org.testng.annotations.Test;
+
+import com.google.common.base.Objects;
+import com.yahoo.pulsar.client.impl.BatchMessageIdImpl;
+import com.yahoo.pulsar.client.impl.ConsumerId;
+import com.yahoo.pulsar.client.impl.MessageIdImpl;
+
+import static org.testng.Assert.assertEquals;
+
+import org.testng.Assert;
+
+public class MessageIdTest {
+    
+    @Test
+    public void messageIdTest() {
+        MessageId mId = new MessageIdImpl(1, 2, 3);
+        assertEquals(mId.toString(), "1:2:3");
+        
+        mId = new BatchMessageIdImpl(0, 2, 3, 4);
+        assertEquals(mId.toString(), "0:2:3:4");
+        
+        mId = new BatchMessageIdImpl(-1, 2, -3, 4);
+        assertEquals(mId.toString(), "-1:2:-3:4");
+        
+        mId = new MessageIdImpl(0, -23, 3);
+        assertEquals(mId.toString(), "0:-23:3");
+    }
+}