diff --git a/README.md b/README.md
index c1883ba..dcbca46 100644
--- a/README.md
+++ b/README.md
@@ -208,7 +208,7 @@ A comic series.
 | --- | --- | --- | --- |
 | `title` | array of `defs#localizedTitle` (min 1, max 100) | yes | Localized title of the series. |
 | `banner` | blob (jpeg/png/webp/avif, max 4 MiB) | yes | Banner image. 3:1 aspect ratio (e.g. 3000×1000). |
-| `ogImage` | blob (jpeg/png, max 4 MiB) | yes | Open Graph share image. 1.91:1 aspect ratio (e.g. 1200×630). JPEG or PNG only, because many link preview crawlers don't support newer formats. |
+| `poster` | blob (jpeg/png, max 4 MiB) | yes | Open Graph share image. 1.91:1 aspect ratio (e.g. 1200×630). JPEG or PNG only, because many link preview crawlers don't support newer formats. |
 | `description` | array of `series#localizedDescription` (min 1, max 100) | yes | Localized short description of the series. |
 | `createdAt` | string (datetime) | yes | When the series was created. |
 | `categories` | array of `defs#category` (min 1, max 3) | yes | Categories, most relevant first. |
diff --git a/src/lexicons/work.sequential.series.ts b/src/lexicons/work.sequential.series.ts
index 0abb76f..505fd3b 100644
--- a/src/lexicons/work.sequential.series.ts
+++ b/src/lexicons/work.sequential.series.ts
@@ -17,7 +17,7 @@ export const workSequentialSeries = lx.lexicon('work.sequential.series', {
                 required: true,
                 description: 'The banner image of the series. 3:1 aspect ratio. (e.g. 3000x1000 pixels)'
             }),
-            ogImage: lx.blob({
+            poster: lx.blob({
                 maxSize: 4 * MiB,
                 accept: ['image/jpeg', 'image/png'],
                 required: true,