diff --git a/packages/next/build/webpack/plugins/flight-types-plugin.ts b/packages/next/build/webpack/plugins/flight-types-plugin.ts
index c1df11d445746..4d19d4eddad78 100644
--- a/packages/next/build/webpack/plugins/flight-types-plugin.ts
+++ b/packages/next/build/webpack/plugins/flight-types-plugin.ts
@@ -35,8 +35,8 @@ interface LayoutProps {
   params?: PageParams
 }
 
-type PageComponent = (props: PageProps) => React.ReactNode | null | Promise<React.ReactNode | null>
-type LayoutComponent = (props: LayoutProps) => React.ReactNode | null | Promise<React.ReactNode | null>
+type PageComponent = (props: PageProps) => React.ReactNode | Promise<React.ReactNode>
+type LayoutComponent = (props: LayoutProps) => React.ReactNode | Promise<React.ReactNode>
 
 interface IEntry {
   ${