diff --git a/app/models/types_de_champ/type_de_champ_base.rb b/app/models/types_de_champ/type_de_champ_base.rb
index 19d37df0e..c01ad1d25 100644
--- a/app/models/types_de_champ/type_de_champ_base.rb
+++ b/app/models/types_de_champ/type_de_champ_base.rb
@@ -54,10 +54,6 @@ class TypesDeChamp::TypeDeChampBase
     filter_value
   end
 
-  def human_to_filter(human_value)
-    human_value
-  end
-
   class << self
     def champ_value(champ)
       champ.value.present? ? champ.value.to_s : champ_default_value
diff --git a/app/models/types_de_champ/yes_no_type_de_champ.rb b/app/models/types_de_champ/yes_no_type_de_champ.rb
index 4e500a6fd..c34ba1dcf 100644
--- a/app/models/types_de_champ/yes_no_type_de_champ.rb
+++ b/app/models/types_de_champ/yes_no_type_de_champ.rb
@@ -11,17 +11,6 @@ class TypesDeChamp::YesNoTypeDeChamp < TypesDeChamp::CheckboxTypeDeChamp
     end
   end
 
-  def human_to_filter(human_value)
-    downcased = human_value.downcase
-    if downcased == "oui"
-      "true"
-    elsif downcased == "non"
-      "false"
-    else
-      downcased
-    end
-  end
-
   class << self
     def champ_value(champ)
       champ_formatted_value(champ)