diff --git a/spring-boot/src/main/java/org/springframework/boot/context/embedded/tomcat/TomcatEmbeddedServletContainerFactory.java b/spring-boot/src/main/java/org/springframework/boot/context/embedded/tomcat/TomcatEmbeddedServletContainerFactory.java
index eef3ffea5d..7cd53024ae 100644
--- a/spring-boot/src/main/java/org/springframework/boot/context/embedded/tomcat/TomcatEmbeddedServletContainerFactory.java
+++ b/spring-boot/src/main/java/org/springframework/boot/context/embedded/tomcat/TomcatEmbeddedServletContainerFactory.java
@@ -82,7 +82,7 @@ import org.springframework.util.StringUtils;
 public class TomcatEmbeddedServletContainerFactory extends
 		AbstractEmbeddedServletContainerFactory implements ResourceLoaderAware {
 
-	private static final String DEFAULT_PROTOCOL = "org.apache.coyote.http11.Http11NioProtocol";
+	public static final String DEFAULT_PROTOCOL = "org.apache.coyote.http11.Http11NioProtocol";
 
 	private File baseDirectory;