diff --git a/README.md b/README.md
index 8ae9ff3..cfb2126 100644
--- a/README.md
+++ b/README.md
@@ -2,5 +2,5 @@
 
 | Title | Description |
 | --- | --- |
-| File Thumbnails | A specification for different types of thumbnails in the context of file transfers |
+| Extensible File Thumbnails | A specification for different types of thumbnails in the context of file transfers |
 | File Upload Notifications | A specification for telling clients that a file will be sent as soon as it is uploaded |
diff --git a/xep-xxxx-file-thumbnails.md b/xep-xxxx-extensible-file-thumbnails.md
similarity index 100%
rename from xep-xxxx-file-thumbnails.md
rename to xep-xxxx-extensible-file-thumbnails.md