From b17296db0d4987984fc04776fa6e494fb277cf8c Mon Sep 17 00:00:00 2001
From: Florian Bruhin <git@the-compiler.org>
Date: Tue, 2 Aug 2016 11:56:34 +0200
Subject: [PATCH] Return with invalid index

---
 qutebrowser/completion/completionwidget.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/qutebrowser/completion/completionwidget.py b/qutebrowser/completion/completionwidget.py
index 7177f1897..6e83e6fee 100644
--- a/qutebrowser/completion/completionwidget.py
+++ b/qutebrowser/completion/completionwidget.py
@@ -199,6 +199,9 @@ class CompletionView(QTreeView):
             return
 
         idx = self._next_idx(prev)
+        if not idx.isValid():
+            return
+
         selmodel.setCurrentIndex(
             idx, QItemSelectionModel.ClearAndSelect | QItemSelectionModel.Rows)