diff --git a/aio/content/tutorial/index.md b/aio/content/tutorial/index.md
index 1db9fa4daa..d724cc5302 100644
--- a/aio/content/tutorial/index.md
+++ b/aio/content/tutorial/index.md
@@ -46,7 +46,7 @@ to pages with greater depth.
When you're done with this tutorial, the app will look like this .
-当完成这个教程时,应用运行起来是这样的:。
+当完成这个教程时,应用运行起来是这样的:。