diff --git a/kafka-samples/http-ingest/src/main/resources/application.yml b/kafka-samples/http-ingest/src/main/resources/application.yml
index 99f4bf6..bd95c19 100644
--- a/kafka-samples/http-ingest/src/main/resources/application.yml
+++ b/kafka-samples/http-ingest/src/main/resources/application.yml
@@ -2,7 +2,7 @@ spring.cloud.stream.kafka.binder.configuration.key:
   serializer: org.apache.kafka.common.serialization.StringSerializer
 spring.cloud.stream.kafka.binder.configuration.value:
   serializer: org.apache.kafka.common.serialization.StringSerializer
-mapped-request-headers: username
+mappedRequestHeaders: username
 spring.cloud.stream.bindings.output.producer:
   messageKeyExpression: headers['username']
   useNativeEncoding: true