diff --git a/notmuch.el b/notmuch.el
index cf18c95f..8894a8e1 100644
--- a/notmuch.el
+++ b/notmuch.el
@@ -791,7 +791,7 @@ global search.
     (goto-char (point-min))
     (while (not (eobp))
       (notmuch-search-markup-this-thread-id)
-      (next-line))))
+      (forward-line))))
 
 (defun notmuch-search-show-thread ()
   (interactive)