diff --git a/node/normalize-frontmatter.js b/node/normalize-frontmatter.js
index 2d06679..470b592 100644
--- a/node/normalize-frontmatter.js
+++ b/node/normalize-frontmatter.js
@@ -37,7 +37,7 @@ export default async function(pageData, {
   }
 
   // prefer authors be an array
-  if (!pageData.frontmatter.authors) pageData.frontmatter.authors = []
+  if (!pageData.frontmatter.authors) pageData.frontmatter.authors = [];
   if (pageData.frontmatter.authors && !Array.isArray(pageData.frontmatter.authors)) {
     pageData.frontmatter.authors = [pageData.frontmatter.authors];
   }