diff --git a/docs/IntegrationWithExistingApps.md b/docs/IntegrationWithExistingApps.md
index 57d1b3b99..54a5d973b 100644
--- a/docs/IntegrationWithExistingApps.md
+++ b/docs/IntegrationWithExistingApps.md
@@ -735,7 +735,7 @@ Now your activity is ready to run some JavaScript code.
 
 ### Configure permissions for development error overlay
 
-If your app is targeting the Android `API level 23` or greater, make sure you have the `overlay` permission enabled for the development build. You can check it with `Settings.canDrawOverlays(this);`. This is required in dev builds because react native development errors must be displayed above all the other windows. Due to the new permissions system introduced in the API level 23, the user needs to approve it. This can be acheived by adding the following code to the Activity file in the onCreate() method. OVERLAY_PERMISSION_REQ_CODE is a field of the class which would be responsible for passing the result back to the Activity.
+If your app is targeting the Android `API level 23` or greater, make sure you have the `overlay` permission enabled for the development build. You can check it with `Settings.canDrawOverlays(this);`. This is required in dev builds because react native development errors must be displayed above all the other windows. Due to the new permissions system introduced in the API level 23, the user needs to approve it. This can be achieved by adding the following code to the Activity file in the onCreate() method. OVERLAY_PERMISSION_REQ_CODE is a field of the class which would be responsible for passing the result back to the Activity.
 
 ```java
 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
diff --git a/docs/Upgrading.md b/docs/Upgrading.md
index d1277093e..d7118b440 100644
--- a/docs/Upgrading.md
+++ b/docs/Upgrading.md
@@ -26,7 +26,7 @@ a minimum of conflicts. Under the hood, it consists in 2 phases:
 * Then, the patch is applied on the user's sources.
 
 ### 1. Install Git
-Your project doesn't have to be handled by the Git versioning sytem (could be Mercurial, SVN or none)
+Your project doesn't have to be handled by the Git versioning system (could be Mercurial, SVN or none)
 but Git has to be installed and available in the `PATH`. You can download Git here:
 https://git-scm.com/downloads