diff --git a/Uploading-output-files.md b/Uploading-output-files.md
index e4c6589..446a4c6 100644
--- a/Uploading-output-files.md
+++ b/Uploading-output-files.md
@@ -10,7 +10,7 @@ On newer Kindle models covers will **not** be displayed in library view.
 #### [Calibre](http://calibre-ebook.com/)
 
 Normal upload through Calibre work correctly. **Don't convert KCC output - Calibre will corrupt the file!**
-On newer Kindle models covers will be displayed **only** if it is added to Calibre book record before upload.
+On newer Kindle models covers will be displayed **only** if they are added to Calibre book record before upload.
 
 #### [KindleButler](https://github.com/AcidWeb/KindleButler)