diff --git a/spring-integration-gemfire/src/main/java/org/springframework/integration/gemfire/inbound/SpelMessageProducerSupport.java b/spring-integration-gemfire/src/main/java/org/springframework/integration/gemfire/inbound/SpelMessageProducerSupport.java
index c4332dea9d..0b662d7dbd 100644
--- a/spring-integration-gemfire/src/main/java/org/springframework/integration/gemfire/inbound/SpelMessageProducerSupport.java
+++ b/spring-integration-gemfire/src/main/java/org/springframework/integration/gemfire/inbound/SpelMessageProducerSupport.java
@@ -21,7 +21,7 @@ import org.springframework.integration.endpoint.MessageProducerSupport;
  * @since 2.1
  *
  */
-public class SpelMessageProducerSupport extends MessageProducerSupport {
+abstract class SpelMessageProducerSupport extends MessageProducerSupport {
 	
 	private volatile Expression payloadExpression;