diff --git a/examples/simple/src/simple/core.cljs b/examples/simple/src/simple/core.cljs
index 4f77142..9e04f27 100644
--- a/examples/simple/src/simple/core.cljs
+++ b/examples/simple/src/simple/core.cljs
@@ -13,7 +13,7 @@
     (rf/dispatch [:timer now])))  ;; <-- dispatch used
 
 ;; Call the dispatching function every second.
-;; `defonce` is like `def` but it ensures only instance is ever
+;; `defonce` is like `def` but it ensures only one instance is ever
 ;; created in the face of figwheel hot-reloading of this file.
 (defonce do-timer (js/setInterval dispatch-timer-event 1000))