diff --git a/doc/tutorial/applications.md b/doc/tutorial/applications.md
index 518f9a4f52..f5e78758d9 100644
--- a/doc/tutorial/applications.md
+++ b/doc/tutorial/applications.md
@@ -36,7 +36,7 @@ var increase = Rx.Observable.fromEvent(increaseButton, 'click')
 var state = increase.scan((state, changeFn) => changeFn(state), {count: 0});
 ```
 
-We can now add a a couple of more observables which will also change the same state store.
+We can now add a couple of more observables which will also change the same state store.
 
 ```js
 var increaseButton = document.querySelector('#increase');