diff --git a/lib/bindings/http/constants.js b/lib/bindings/http/constants.js
index 52a475c..626889d 100644
--- a/lib/bindings/http/constants.js
+++ b/lib/bindings/http/constants.js
@@ -64,5 +64,16 @@ module.exports = {
     CONTENT_TYPE      : "datacontenttype",
     SUBJECT           : "subject",
     DATA              : "data"
+  },
+
+  BINARY_HEADERS_1 : {
+    TYPE              : "ce-type",
+    SPEC_VERSION      : "ce-specversion",
+    SOURCE            : "ce-source",
+    ID                : "ce-id",
+    TIME              : "ce-time",
+    DATA_SCHEMA       : "ce-dataschema",
+    SUBJECT           : "ce-subject",
+    EXTENSIONS_PREFIX : "ce-"
   }
 };