diff --git a/docs/src/main/asciidoc/adapters/aws-intro.adoc b/docs/src/main/asciidoc/adapters/aws-intro.adoc
index bc4295cdf..1904477b9 100644
--- a/docs/src/main/asciidoc/adapters/aws-intro.adoc
+++ b/docs/src/main/asciidoc/adapters/aws-intro.adoc
@@ -90,6 +90,9 @@ Also, note that since AWS does not allow dots `.` and/or hyphens`-` in the name
 dots with underscores and hyphens with camel case.  So for example `spring.cloud.function.definition` becomes `spring_cloud_function_definition`
 and `spring.cloud.function.routing-expression` becomes `spring_cloud_function_routingExpression`. 
 
+===== AWS Function Routing with Custom Runtime
+
+When using <<Custom Runtime>> Function Routing works the same way. All you need is to specify `functionRouter` as AWS Handler the same way you would use the name of the function as handler. 
 
 ==== Notes on JAR Layout