diff --git a/org.springframework.integration/src/main/java/org/springframework/integration/channel/AbstractSubscribableChannel.java b/org.springframework.integration/src/main/java/org/springframework/integration/channel/AbstractSubscribableChannel.java
index 88b6662cc2..b509f3d12f 100644
--- a/org.springframework.integration/src/main/java/org/springframework/integration/channel/AbstractSubscribableChannel.java
+++ b/org.springframework.integration/src/main/java/org/springframework/integration/channel/AbstractSubscribableChannel.java
@@ -45,7 +45,7 @@ public abstract class AbstractSubscribableChannel extends AbstractMessageChannel
 
 	private MessageDispatcher getRequiredDispatcher() {
 		MessageDispatcher dispatcher = this.getDispatcher();
-		Assert.state(dispatcher != null, "dispatcher must not be null");
+		Assert.state(dispatcher != null, "'dispatcher' must not be null");
 		return dispatcher;
 	}
 
diff --git a/org.springframework.integration/src/main/java/org/springframework/integration/channel/ExecutorChannel.java b/org.springframework.integration/src/main/java/org/springframework/integration/channel/ExecutorChannel.java
index 24ca565e4c..79ff312cd2 100644
--- a/org.springframework.integration/src/main/java/org/springframework/integration/channel/ExecutorChannel.java
+++ b/org.springframework.integration/src/main/java/org/springframework/integration/channel/ExecutorChannel.java
@@ -75,7 +75,7 @@ public class ExecutorChannel extends AbstractSubscribableChannel {
 
 
 		ExecutorDecoratingDispatcher(AbstractUnicastDispatcher dispatcher, TaskExecutor taskExecutor) {
-			Assert.notNull(dispatcher, "dispatcher must not be null");
+			Assert.notNull(dispatcher, "'dispatcher' must not be null");
 			this.targetDispatcher = dispatcher;
 			this.taskExecutor = taskExecutor != null ? taskExecutor
 					: new ConcurrentTaskExecutor(Executors.newSingleThreadExecutor());