diff --git a/app/models/procedure_revision.rb b/app/models/procedure_revision.rb
index a8ad60d9f..a1839ae36 100644
--- a/app/models/procedure_revision.rb
+++ b/app/models/procedure_revision.rb
@@ -155,15 +155,11 @@ class ProcedureRevision < ApplicationRecord
   end
 
   def children_of(tdc)
-    parent_revision_type_de_champ = revision_types_de_champ.find_by(type_de_champ: tdc)
+    parent_coordinate_id = revision_types_de_champ.where(type_de_champ: tdc).select(:id)
 
-    if parent_revision_type_de_champ.present?
-      types_de_champ
-        .where(procedure_revision_types_de_champ: { parent_id: parent_revision_type_de_champ.id })
-        .order("procedure_revision_types_de_champ.position")
-    else
-      TypeDeChamp.none
-    end
+    types_de_champ
+      .where(procedure_revision_types_de_champ: { parent_id: parent_coordinate_id })
+      .order("procedure_revision_types_de_champ.position")
   end
 
   private