diff --git a/packages/markdown/parseMarkdown.js b/packages/markdown/parseMarkdown.js
index 59ce3a19e8d9b8..34212cb9087db7 100644
--- a/packages/markdown/parseMarkdown.js
+++ b/packages/markdown/parseMarkdown.js
@@ -684,10 +684,12 @@ ${headers.hooks
     );
 
     if (!exists) {
-      throw new Error([
-        `MUI: the card image for the blog post "${slug}" is missing.`,
-        `Add a docs/public/static/blog/${slug}/card.png file then restart Next.js or remove card: true from the headers.`,
-      ].join('\n'));
+      throw new Error(
+        [
+          `MUI: the card image for the blog post "${slug}" is missing.`,
+          `Add a docs/public/static/blog/${slug}/card.png file then restart Next.js or remove card: true from the headers.`,
+        ].join('\n'),
+      );
     }
   }