diff --git a/Protected notes.md b/Protected-notes.md
similarity index 97%
rename from Protected notes.md
rename to Protected-notes.md
index d22efb8..952d965 100644
--- a/Protected notes.md	
+++ b/Protected-notes.md
@@ -44,3 +44,6 @@ Not encrypted:
     * data encryption key is random key generated at the time of [[document|Document]] initialization and is constant over the lifetime of the document. If we change password, we re-encrypt only this key.
 5. We use data encryption key to decrypt actual data - note title and content.
     * encryption used is again AES-128 with [CBC chaining](https://en.wikipedia.org/wiki/Block_cipher_mode_of_operation). Unique IV is generated with every encryption operation and stored together with the cipher text.
+
+## Sharing
+Please note that protected notes cannot be shared like regular notes.