diff --git a/metadata/com.fsck.k9.txt b/metadata/com.fsck.k9.txt
index ffd038bb92..558d573697 100644
--- a/metadata/com.fsck.k9.txt
+++ b/metadata/com.fsck.k9.txt
@@ -6,6 +6,8 @@ Issue Tracker:http://code.google.com/p/k9mail/issues/list
 
 Summary:Full-featured email client
 Description:
+N.B if you are installing the newer version that is built from source, you must uninstall the one you have as it's signed with a different key. Not to worry though as K9mail is able to export all your settings; you only need to re-enter your passwords after you import them into the new version.
+
 Email client supporting multiple accounts, POP3, IMAP, Push IMAP. Packed with
 features and highly configurable.