diff --git a/docs/src/main/asciidoc/spring-cloud-netflix.adoc b/docs/src/main/asciidoc/spring-cloud-netflix.adoc
index 223dccfab..789672194 100755
--- a/docs/src/main/asciidoc/spring-cloud-netflix.adoc
+++ b/docs/src/main/asciidoc/spring-cloud-netflix.adoc
@@ -67,7 +67,9 @@ eureka:
       defaultZone: http://localhost:8761/eureka/
 ----
 
-In the preceding example, "defaultZone" is a magic string fallback value that provides the service URL for any client that does not express a preference (in other words, it is a useful default).
+In the preceding example, `defaultZone` is a magic string fallback value that provides the service URL for any client that does not express a preference (in other words, it is a useful default).
+
+WARNING: The `defaultZone` property is case sensitive and requires camel case because the `serviceUrl` property is a `Map<String, String>`. Therefore, the `defaultZone` property does not follow the normal Spring Boot snake-case convention of `default-zone`.
 
 The default application name (that is, the service ID), virtual host, and non-secure port (taken from the `Environment`) are `${spring.application.name}`, `${spring.application.name}` and `${server.port}`, respectively.