diff --git a/spring-cloud-function-samples/spring-cloud-function-sample-task/src/main/resources/application.yml b/spring-cloud-function-samples/spring-cloud-function-sample-task/src/main/resources/application.yml
index 6f6bf27b0..09ff71a48 100644
--- a/spring-cloud-function-samples/spring-cloud-function-sample-task/src/main/resources/application.yml
+++ b/spring-cloud-function-samples/spring-cloud-function-sample-task/src/main/resources/application.yml
@@ -16,3 +16,4 @@ spring:
         print:
           type: consumer
           lambda: System.out::println
+          inputType: String