diff --git a/README.md b/README.md
index 95284dc2..3a21594d 100644
--- a/README.md
+++ b/README.md
@@ -39,6 +39,6 @@ The following files are automatically copied to your project's root directory if
 
 ## Adjusted files
 
-Your project's `package.json` will be examined to determine whether or not you have `nyc` installed in your `devDependencies`. If it is installed the recommended configuration for `nyc` will be added to/updated in your `package.json`.
+Your project's `package.json` will be examined to determine whether or not you have `nyc` installed in your `devDependencies`. If it is installed the recommended configuration for `nyc` will be added to your `package.json` if it does not exist.
 
 A script called `check-configuration` will be added to your `package.json` to execute the configuration script manually again.