diff --git a/spring-integration-core/src/main/java/org/springframework/integration/bus/MessageBus.java b/spring-integration-core/src/main/java/org/springframework/integration/bus/MessageBus.java
index 357872dedd..b79f5373b9 100644
--- a/spring-integration-core/src/main/java/org/springframework/integration/bus/MessageBus.java
+++ b/spring-integration-core/src/main/java/org/springframework/integration/bus/MessageBus.java
@@ -146,7 +146,7 @@ public class MessageBus implements ChannelRegistry, ApplicationContextAware, Lif
 		}
 		if (this.autoCreateChannels) {
 			String defaultOutputChannelName = endpoint.getDefaultOutputChannelName();
-			if (StringUtils.hasText(defaultOutputChannelName)) {
+			if (StringUtils.hasText(defaultOutputChannelName) && this.lookupChannel(defaultOutputChannelName) == null) {
 				this.registerChannel(defaultOutputChannelName, new PointToPointChannel());
 			}
 		}