diff --git a/lib/pleroma/web/activity_pub/mrf/simple_policy.ex b/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
index 2f105700b..50426e920 100644
--- a/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
@@ -55,7 +55,7 @@ defp check_media_nsfw(
     object =
       if Enum.member?(Pleroma.Config.get([:mrf_simple, :media_nsfw]), actor_host) do
         tags = (child_object["tag"] || []) ++ ["nsfw"]
-        child_object = Map.put(child_object, "tags", tags)
+        child_object = Map.put(child_object, "tag", tags)
         child_object = Map.put(child_object, "sensitive", true)
         Map.put(object, "object", child_object)
       else
diff --git a/lib/pleroma/web/activity_pub/mrf/tag_policy.ex b/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
index b52be30e7..6683b8d8e 100644
--- a/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
@@ -31,7 +31,7 @@ defp process_tag(
 
     object =
       object
-      |> Map.put("tags", tags)
+      |> Map.put("tag", tags)
       |> Map.put("sensitive", true)
 
     message = Map.put(message, "object", object)