diff --git a/layouts/_default/single.activity.ajson b/layouts/_default/single.activity.ajson
index 3fb4a72..5a905c4 100644
--- a/layouts/_default/single.activity.ajson
+++ b/layouts/_default/single.activity.ajson
@@ -2,9 +2,10 @@
     "@context": [
         "https://www.w3.org/ns/activitystreams"
     ],
-    "title": {{ .Title | jsonify }},
-    "content_html": {{ .Content | jsonify }},
-    "summary": {{ .Summary | jsonify }},
+    "title": {{ (htmlUnescape .Title | safeHTML) | jsonify }},
+    "content": {{ (htmlUnescape .Content | safeHTML) | jsonify }},
+    "mediaType": "text/html",
+    "summary": {{ (htmlUnescape .Summary | safeHTML) | jsonify }},
     "published": {{ dateFormat "2006-01-02T15:04:05-07:00" .Lastmod | jsonify }},
     "updated": {{ dateFormat "2006-01-02T15:04:05-07:00" .Date | jsonify }},
     "id": "{{ .Permalink }}",