diff --git a/README.md b/README.md
index 2b86a46..3bb1871 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ Make sure both devices are on the same Wi-Fi network. Local network communicatio
 
 #### How do I send files?
 
-Right-click a file in Finder, select Share, then select NearDrop.
+Right-click a file in Finder, select Share, then select NearDrop. Be sure to [add the extension](https://github.com/grishka/NearDrop/assets/25108287/bf487c1f-28f4-41a2-99c9-c104ec5d0837).
 
 #### How do I send links?