diff --git a/engine/src/flutter/CONTRIBUTING.md b/engine/src/flutter/CONTRIBUTING.md
index 975dd5eaa0..e271bfebd1 100644
--- a/engine/src/flutter/CONTRIBUTING.md
+++ b/engine/src/flutter/CONTRIBUTING.md
@@ -41,10 +41,10 @@ solutions = [
 ]
 target_os = ["android"]
 ```
- * `cd flutter` (Change to the directory in which you put the `.gclient` file)
+ * `cd flutter` (Change to the directory in which you put the `.gclient` file.)
  * `gclient sync` This will fetch all the source code that Flutter depends on. Avoid interrupting this script, it can leave your repository in an inconsistent state that is tedious to clean up.
- * `cd src` (Change to the directory that `gclient sync` created in your `flutter` directory)
- * `git remote add upstream git@github.com:flutter/engine.git` (So that you fetch from the master repository, not your clone, when running `git fetch` et al)
+ * `cd src` (Change to the directory that `gclient sync` created in your `flutter` directory.)
+ * `git remote add upstream git@github.com:flutter/engine.git` (So that you fetch from the master repository, not your clone, when running `git fetch` et al.)
  * Add `.../flutter/src/third_party/dart-sdk/dart-sdk/bin/` to your path so that you can run the `pub` tool more easily.
 
 Building the code