diff --git a/spring-cloud-stream-core-docs/src/main/asciidoc/spring-cloud-stream-overview.adoc b/spring-cloud-stream-core-docs/src/main/asciidoc/spring-cloud-stream-overview.adoc
index 10bf4102a..d1e1e1fb4 100644
--- a/spring-cloud-stream-core-docs/src/main/asciidoc/spring-cloud-stream-overview.adoc
+++ b/spring-cloud-stream-core-docs/src/main/asciidoc/spring-cloud-stream-overview.adoc
@@ -1345,7 +1345,7 @@ contentType::
 The content type of the channel.
 See "`<<content-type-management>>`".
 +
-Default: `null` (no type coercion is performed).
+Default: `application/json`.
 binder::
 The binder used by this binding.
 See "`<<multiple-binders>>`" for details.