diff --git a/src/com/fsck/k9/controller/MessagingController.java b/src/com/fsck/k9/controller/MessagingController.java
index 7b54d2fc0..eb46c15b8 100644
--- a/src/com/fsck/k9/controller/MessagingController.java
+++ b/src/com/fsck/k9/controller/MessagingController.java
@@ -2766,6 +2766,7 @@ public class MessagingController implements Runnable {
                         localFolder.fetch(new Message[] { message }, fp, null);
 
                         // Mark that this message is now fully synched
+                        message.setFlag(Flag.SEEN, true);
                         message.setFlag(Flag.X_DOWNLOADED_FULL, true);
                     }