diff --git a/lib/redmine_dmsf/webdav/dmsf_resource.rb b/lib/redmine_dmsf/webdav/dmsf_resource.rb
index eb7f6a9d..0d40f5ca 100644
--- a/lib/redmine_dmsf/webdav/dmsf_resource.rb
+++ b/lib/redmine_dmsf/webdav/dmsf_resource.rb
@@ -52,7 +52,7 @@ module RedmineDmsf
       # Our already quite heavy usage of DB would just get silly every time we called
       # this method.
       def children
-        unless @childern
+        unless @children
           @children = []
           if collection?
             folder.dmsf_folders.select(:title).visible.map do |p|