diff --git a/doc/THUMBNAIL.md b/doc/THUMBNAIL.md
index 1ae3fb25..7360a29f 100644
--- a/doc/THUMBNAIL.md
+++ b/doc/THUMBNAIL.md
@@ -29,7 +29,7 @@ You have to use the [`res/layout/native_card_thumbnail_layout.xml`](/library-cor
 For the **CardView**:
 [`res/layout/card_thumbnail_layout.xml`](/library-core/src/main/res/layout/card_thumbnail_layout.xml) 
  
-or a your custom layout.
+or your custom layout.
  
 Read [Customizing the Thumbnail Layout](#customizing-the-thumbnail-layout) paragraph for more info.
 
@@ -440,4 +440,4 @@ You can see an example [here](/demo/stock/src/main/java/it/gmariotti/cardslib/de
 
 ---
 
-Google, Google Play and the Google Maps logo are registered trademarks of Google Inc.
\ No newline at end of file
+Google, Google Play and the Google Maps logo are registered trademarks of Google Inc.