diff --git a/packages/plugin-auto-frontmatter/src/node/plugin.ts b/packages/plugin-auto-frontmatter/src/node/plugin.ts
index 2eb66e95..ef036117 100644
--- a/packages/plugin-auto-frontmatter/src/node/plugin.ts
+++ b/packages/plugin-auto-frontmatter/src/node/plugin.ts
@@ -48,7 +48,7 @@ export const autoFrontmatterPlugin = ({
     const { data, content } = grayMatter(file.content)
 
     for (const key in formatter) {
-      const value = await formatMarkdown[key](data[key], file, data)
+      const value = await formatter[key](data[key], file, data)
       data[key] = value ?? data[key]
     }