diff --git a/packages/binding-http/README.md b/packages/binding-http/README.md
index 750a20168..b87a274d8 100644
--- a/packages/binding-http/README.md
+++ b/packages/binding-http/README.md
@@ -356,11 +356,11 @@ servient.start().then(async (WoT) => {
 | subscribeevent          |       Y       |       Y       |
 | unsubscribeevent        |       ?       |       ?       |
 
-| SubProtocols | HTTP Producer | HTTP Consumer |
-| :----------- | :-----------: | :-----------: |
-| longpoll     |       Y       |       Y       |
-| sse          |       Y       |       Y       |
-| websub       |       N       |       N       |
+| SubProtocols                                                                                                                                                 | HTTP Producer | HTTP Consumer |
+| :----------------------------------------------------------------------------------------------------------------------------------------------------------- | :-----------: | :-----------: |
+| longpoll                                                                                                                                                     |       Y       |       Y       |
+| sse <details><summary>Details</summary>Note: `contentType` should target payload in the data field (e.g., `application/json` if sending JSON etc.)</details> |       N       |       Y       |
+| websub                                                                                                                                                       |       N       |       N       |
 
 | Sec. Schemes | HTTP Producer | HTTP Consumer |
 | :----------- | :-----------: | :-----------: |