diff --git a/qutebrowser/browser/urlmarks.py b/qutebrowser/browser/urlmarks.py
index d9e49b5c2..5f7a4fb77 100644
--- a/qutebrowser/browser/urlmarks.py
+++ b/qutebrowser/browser/urlmarks.py
@@ -168,7 +168,7 @@ class QuickmarkManager(UrlMarkManager):
 
         def set_mark():
             """Really set the quickmark."""
-            self.insert([name, url])
+            self.insert([name, url], replace=True)
             log.misc.debug("Added quickmark {} for {}".format(name, url))
 
         if name in self: