diff --git a/lib/router/router.js b/lib/router/router.js
index 1873002d..222499ab 100644
--- a/lib/router/router.js
+++ b/lib/router/router.js
@@ -199,6 +199,11 @@ export default class Router {
       }
 
       const { Component } = routeInfo
+
+      if (typeof Component !== 'function') {
+        throw new Error(`The default export is not a React Component in page: "${pathname}"`)
+      }
+
       const ctx = { pathname, query, asPath: as }
       routeInfo.props = await this.getInitialProps(Component, ctx)