--- a/mercurial/hgweb/webutil.py	Sun Apr 01 22:40:15 2018 +0900
+++ b/mercurial/hgweb/webutil.py	Sun Apr 01 22:41:49 2018 +0900
@@ -35,6 +35,7 @@
     scmutil,
     templatefilters,
     templatekw,
+    templateutil,
     ui as uimod,
     util,
 )
@@ -63,7 +64,7 @@
                 'url': url,
             })
 
-    return archives
+    return templateutil.mappinglist(archives)
 
 def up(p):
     if p[0:1] != "/":