diff --git a/lib/search.rb b/lib/search.rb
index d68b06c70a8..5dc07cb0e3e 100644
--- a/lib/search.rb
+++ b/lib/search.rb
@@ -29,6 +29,7 @@ class Search
       when :nl then 'dutch'
       when :pt then 'portuguese'
       when :sv then 'swedish'
+      when :ru then 'russian'
       else 'simple' # use the 'simple' stemmer for other languages
     end
   end