diff --git a/ui/src/routes/blog/05_v1.2.md b/ui/src/routes/blog/05_v1.2.md
index cd71a0bd..06d2b979 100644
--- a/ui/src/routes/blog/05_v1.2.md
+++ b/ui/src/routes/blog/05_v1.2.md
@@ -49,7 +49,7 @@ some content ...
 
 ```
 
-As you can see, the same metadata than before is now defined in the `README.md` file as `frontmatter`. Additionally, a new mandatory metadata field called `thumbnail` is required to show a preview of the dataset/model in the UI.
+As you can see, the same metadata than before is now defined in the `README.md` file as `frontmatter`. Additionally, a new metadata field called `thumbnail` is optional to show a preview of the dataset/model in the UI.
 
 This file is supposed to be in sync with the metadata shown in the UI, which can be modified by the user. Two new flags have been added to the `ingest` command to either force the update of the metadata in the `README.md` file or to sync the metadata in the `README.md` file with the one in the UI.