diff --git a/lib/locales/utils/p11n.rb b/lib/locales/utils/p11n.rb
index 4767c8f73..a0b441be9 100644
--- a/lib/locales/utils/p11n.rb
+++ b/lib/locales/utils/p11n.rb
@@ -31,6 +31,13 @@
     else                                                                          'other'
     end
   end,
+  
+  west_slavic: lambda do |n|
+     if n == 1                    ; 'one'
+     elsif [2, 3, 4].include?(n)  ; 'few'
+     else                         ; 'other'
+     end
+  end,
 
   one_two_other: lambda do |n|
     if n == 1    ; 'one'
@@ -60,6 +67,7 @@
 # The default pluralization for locales not explicitly listed here
 # is the :one_other pluralization proc (used for English)
 plurals = Hash.new(p11n[:one_other]).tap do |hash|
+  hash['cs']    = p11n[:west_slavic]
   hash['id']    = p11n[:other]
   hash['fr']    = p11n[:one_upto_two_other]
   hash['ja']    = p11n[:other]