diff --git a/app/models/columns/linked_drop_down_column.rb b/app/models/columns/linked_drop_down_column.rb
index 6399137b0..c7611168e 100644
--- a/app/models/columns/linked_drop_down_column.rb
+++ b/app/models/columns/linked_drop_down_column.rb
@@ -43,7 +43,7 @@ class Columns::LinkedDropDownColumn < Columns::ChampColumn
 
   private
 
-  def column_id = "type_de_champ/#{stable_id}->#{path}"
+  def column_id = "type_de_champ/#{stable_id}.#{path}"
 
   def typed_value(champ)
     primary_value, secondary_value = unpack_values(champ.value)