diff --git a/faq.html b/faq.html
index 6e408293..0e8f71cc 100644
--- a/faq.html
+++ b/faq.html
@@ -829,6 +829,7 @@ also in the array, the 100% safe way to proceed is:
 
 <ul>
 <li>Copy the files to the new location.</li>
+<li>Run a 'diff' command to verify that the just copied files are correctly identified as 'copy'.</li>
 <li>Run a 'sync' command.</li>
 <li>Delete the files from the original location.</li>
 <li>Run again a 'sync' command.</li>