diff --git a/cards.md b/cards.md
index a7cd3ea9e00279255fd74b19884c5fe8df8a1c80..0689f8e2ae1d06021329b9b405badd78424595af 100644
--- a/cards.md
+++ b/cards.md
@@ -76,7 +76,6 @@ order: -1
 			<li><a href="external/integrity/checksum">Ensuring Integrity of Data Files with Checksums</a></li>
 			<li><a href="external/integrity/encryption/cloud">Data upload to cloud</a></li>
 			<li><a href="external/integrity/encryption/disk">Encrypting the Startup Disk for Your Laptop/Desktop</a></li>
-			<li><a href="external/integrity/encryption/file">Data upload to cloud</a></li>
 			<li><a href="external/integrity/encryption/file">Encrypting Files and Folders</a></li>
 			<li><a href="external/integrity/naming">Naming files</a></li>
 			<li><a href="external/integrity/organization">Organization</a></li>