diff --git a/index.html b/index.html
index b319168..cd66efb 100644
--- a/index.html
+++ b/index.html
@@ -1811,7 +1811,7 @@ Location: https://dustycloud.org/likes/345
           it is worth noting that ActivityPub's targeting and delivery
           mechanism overlaps with the
           <a href="https://www.w3.org/TR/ldn/">Linked Data Notifications</a>
-          specification, and the two specifications may interoperably
+          specification, and the two specifications may be interoperably
           combined.
           In particular, the <code>inbox</code> property is the same between
           ActivityPub and Linked Data Notifications, and the targeting