diff --git a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/endpoint/web/MappingWebEndpointPathMapper.java b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/endpoint/web/MappingWebEndpointPathMapper.java
index e8cf0147d9..0c6e09833e 100644
--- a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/endpoint/web/MappingWebEndpointPathMapper.java
+++ b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/endpoint/web/MappingWebEndpointPathMapper.java
@@ -40,7 +40,7 @@ class MappingWebEndpointPathMapper implements PathMapper {
 
 	@Override
 	public String getRootPath(EndpointId endpointId) {
-		return this.pathMapping.getOrDefault(endpointId, endpointId.toLowerCaseString());
+		return this.pathMapping.getOrDefault(endpointId, endpointId.toString());
 	}
 
 }
diff --git a/spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/endpoint/web/MappingWebEndpointPathMapperTests.java b/spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/endpoint/web/MappingWebEndpointPathMapperTests.java
index d9d1d0aa92..432d9cd849 100644
--- a/spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/endpoint/web/MappingWebEndpointPathMapperTests.java
+++ b/spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/endpoint/web/MappingWebEndpointPathMapperTests.java
@@ -50,7 +50,7 @@ public class MappingWebEndpointPathMapperTests {
 		MappingWebEndpointPathMapper mapper = new MappingWebEndpointPathMapper(
 				Collections.emptyMap());
 		assertThat(mapper.getRootPath(EndpointId.of("testEndpoint")))
-				.isEqualTo("testendpoint");
+				.isEqualTo("testEndpoint");
 	}
 
 	@Test
diff --git a/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/web/PathMapper.java b/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/web/PathMapper.java
index e67027265c..190deae9ca 100644
--- a/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/web/PathMapper.java
+++ b/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/web/PathMapper.java
@@ -41,8 +41,7 @@ public interface PathMapper {
 	 * @return an {@link PathMapper} that uses the lowercase endpoint ID as the path
 	 */
 	static PathMapper useEndpointId() {
-		return (id) -> id.toLowerCaseString();
-
+		return (id) -> id.toString();
 	}
 
 }