diff --git a/app/src/main/java/eu/faircode/email/JsonLd.java b/app/src/main/java/eu/faircode/email/JsonLd.java
index bb2c885418..06b65e8460 100644
--- a/app/src/main/java/eu/faircode/email/JsonLd.java
+++ b/app/src/main/java/eu/faircode/email/JsonLd.java
@@ -83,6 +83,7 @@ public class JsonLd {
             if (!HTTP_SCHEMA_ORG.equals(jcontext) &&
                     !HTTPS_SCHEMA_ORG.equals(jcontext)) {
                 Log.e("JSON-LD " + jcontext + "?=" + jtype);
+                // Organization, PromotionCard, DiscountOffer
                 return null;
             }