diff --git a/app/models/champs/iban_champ.rb b/app/models/champs/iban_champ.rb
index 9c8b24053..cc26eafa8 100644
--- a/app/models/champs/iban_champ.rb
+++ b/app/models/champs/iban_champ.rb
@@ -4,14 +4,6 @@ class Champs::IbanChamp < Champ
   validates_with IbanValidator, if: :validate_champ_value_or_prefill?
   after_validation :format_iban
 
-  def for_api
-    to_s.gsub(/\s+/, '')
-  end
-
-  def for_api_v2
-    for_api
-  end
-
   private
 
   def format_iban
diff --git a/app/models/types_de_champ/iban_type_de_champ.rb b/app/models/types_de_champ/iban_type_de_champ.rb
index 4fed46419..a5a683f25 100644
--- a/app/models/types_de_champ/iban_type_de_champ.rb
+++ b/app/models/types_de_champ/iban_type_de_champ.rb
@@ -4,4 +4,8 @@ class TypesDeChamp::IbanTypeDeChamp < TypesDeChamp::TypeDeChampBase
   def estimated_fill_duration(revision)
     FILL_DURATION_MEDIUM
   end
+
+  def champ_value_for_api(champ, version: 2)
+    champ_value(champ).gsub(/\s+/, '')
+  end
 end