diff --git a/README.md b/README.md
index 8002390..c87228e 100644
--- a/README.md
+++ b/README.md
@@ -59,6 +59,7 @@ import ReactDOM from "react-dom"
 import { createMedia } from "@artsy/fresnel"
 
 const { MediaContextProvider, Media } = createMedia({
+  // breakpoints values can be either strings or integers
   breakpoints: {
     sm: 0,
     md: 768,