diff --git a/src/config.ts b/src/config.ts
index e1cea36c7..852e70249 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -192,6 +192,7 @@ function normalizePage(spec: any): Page {
   let {name, path} = spec;
   name = String(name);
   path = String(path);
+  if (path.endsWith("/")) path = `${path}index`;
   return {name, path};
 }