diff --git a/spring-boot-samples/spring-boot-sample-tomcat-multi-connectors/src/main/java/sample/tomcat/SampleTomcatTwoConnectorsApplication.java b/spring-boot-samples/spring-boot-sample-tomcat-multi-connectors/src/main/java/sample/tomcat/SampleTomcatTwoConnectorsApplication.java
index 68f5704627b..3bf7fb3bb25 100644
--- a/spring-boot-samples/spring-boot-sample-tomcat-multi-connectors/src/main/java/sample/tomcat/SampleTomcatTwoConnectorsApplication.java
+++ b/spring-boot-samples/spring-boot-sample-tomcat-multi-connectors/src/main/java/sample/tomcat/SampleTomcatTwoConnectorsApplication.java
@@ -40,7 +40,7 @@ import org.springframework.util.SocketUtils;
 public class SampleTomcatTwoConnectorsApplication {
 
 	@Bean
-	public int port() {
+	public Integer port() {
 		return SocketUtils.findAvailableTcpPort();
 	}