diff --git a/docs/route.md b/docs/route.md
index 2d4112cc..f941bce7 100644
--- a/docs/route.md
+++ b/docs/route.md
@@ -39,6 +39,8 @@ m.route(document.body, "/home", {
 })
 ```
 
+You can only have one `m.route` call per application.
+
 ---
 
 ### Signature