diff --git a/qutebrowser/config/configdata.yml b/qutebrowser/config/configdata.yml
index db57cdf7d..a070d2951 100644
--- a/qutebrowser/config/configdata.yml
+++ b/qutebrowser/config/configdata.yml
@@ -585,6 +585,7 @@ completion.web_history_max_items:
   type:
     name: Int
     minval: -1
+    maxval: maxint64
   desc: >-
     How many URLs to show in the web history.