diff --git a/spring-integration-twitter/src/main/java/org/springframework/integration/twitter/outbound/AbstractOutboundTwitterEndpointSupport.java b/spring-integration-twitter/src/main/java/org/springframework/integration/twitter/outbound/AbstractOutboundTwitterEndpointSupport.java
index 1e652773f7..8b837488ad 100644
--- a/spring-integration-twitter/src/main/java/org/springframework/integration/twitter/outbound/AbstractOutboundTwitterEndpointSupport.java
+++ b/spring-integration-twitter/src/main/java/org/springframework/integration/twitter/outbound/AbstractOutboundTwitterEndpointSupport.java
@@ -23,9 +23,10 @@ import twitter4j.Twitter;
 
 
 /**
- * The adapters that support 'sending' / 'updating status' messages will do so on top of this implementation for convenience, only.
+ * Base adapter class for all outbound Twitter adapters
  *
  * @author Josh Long
+ * @since 2.0
  */
 public abstract class AbstractOutboundTwitterEndpointSupport extends AbstractMessageHandler {
 	protected volatile OAuthConfiguration configuration;
diff --git a/spring-integration-twitter/src/main/java/org/springframework/integration/twitter/outbound/OutboundDirectMessageMessageHandler.java b/spring-integration-twitter/src/main/java/org/springframework/integration/twitter/outbound/OutboundDirectMessageMessageHandler.java
index 4e853970e6..920729db0c 100644
--- a/spring-integration-twitter/src/main/java/org/springframework/integration/twitter/outbound/OutboundDirectMessageMessageHandler.java
+++ b/spring-integration-twitter/src/main/java/org/springframework/integration/twitter/outbound/OutboundDirectMessageMessageHandler.java
@@ -39,7 +39,7 @@ public class OutboundDirectMessageMessageHandler extends AbstractOutboundTwitter
 		}
 		try {
 			Assert.isInstanceOf(String.class, message.getPayload(), "Only payload of type String is supported. If your payload " +
-					"is not of type String you may want to introduce transformer");
+					"is not of type String consider adding a transformer to the message flow in front of this adapter.");
 			Assert.isTrue(message.getHeaders().containsKey(TwitterHeaders.DM_TARGET_USER_ID), 
 					"the '" + TwitterHeaders.DM_TARGET_USER_ID + "' header is required");
 			Object toUser = message.getHeaders().get(TwitterHeaders.DM_TARGET_USER_ID);