diff --git a/addons/account/static/src/components/section_and_note_fields_backend/section_and_note_fields_backend.js b/addons/account/static/src/components/section_and_note_fields_backend/section_and_note_fields_backend.js
index 419ff867a83..d5f90c4e5c2 100644
--- a/addons/account/static/src/components/section_and_note_fields_backend/section_and_note_fields_backend.js
+++ b/addons/account/static/src/components/section_and_note_fields_backend/section_and_note_fields_backend.js
@@ -71,7 +71,6 @@ export class SectionAndNoteListRenderer extends ListRenderer {
 SectionAndNoteListRenderer.template = "account.sectionAndNoteListRenderer";
 
 export class SectionAndNoteFieldOne2Many extends X2ManyField {}
-SectionAndNoteFieldOne2Many.additionalClasses = ['o_field_one2many'];
 SectionAndNoteFieldOne2Many.components = {
     ...X2ManyField.components,
     ListRenderer: SectionAndNoteListRenderer,
@@ -95,6 +94,7 @@ export class ListSectionAndNoteText extends SectionAndNoteText {
 export const sectionAndNoteFieldOne2Many = {
     ...x2ManyField,
     component: SectionAndNoteFieldOne2Many,
+    additionalClasses: [...x2ManyField.additionalClasses || [], "o_field_one2many"],
 };
 
 export const sectionAndNoteText = {
diff --git a/addons/mrp/static/src/widgets/mrp_production_components_x2many.js b/addons/mrp/static/src/widgets/mrp_production_components_x2many.js
index 841cf7e7e35..e414ce2c10e 100644
--- a/addons/mrp/static/src/widgets/mrp_production_components_x2many.js
+++ b/addons/mrp/static/src/widgets/mrp_production_components_x2many.js
@@ -19,11 +19,11 @@ MrpProductionComponentsX2ManyField.components = {
     ...X2ManyField.components,
     ListRenderer: MrpProductionComponentsListRenderer
 };
-MrpProductionComponentsX2ManyField.additionalClasses = ["o_field_many2many"];
 
 export const mrpProductionComponentsX2ManyField = {
     ...x2ManyField,
     component: MrpProductionComponentsX2ManyField,
+    additionalClasses: [...x2ManyField.additionalClasses || [], "o_field_many2many"],
 };
 
 registry.category("fields").add("mrp_production_components_x2many", mrpProductionComponentsX2ManyField);
diff --git a/addons/resource/static/src/section_one2many_field.js b/addons/resource/static/src/section_one2many_field.js
index bdcc909d448..a2b4fe4044f 100644
--- a/addons/resource/static/src/section_one2many_field.js
+++ b/addons/resource/static/src/section_one2many_field.js
@@ -13,9 +13,9 @@ SectionOneToManyField.defaultProps = {
     ...X2ManyField.defaultProps,
     editable: "bottom",
 };
-SectionOneToManyField.additionalClasses = ["o_field_one2many"];
 
 registry.category("fields").add("section_one2many", {
     ...x2ManyField,
     component: SectionOneToManyField,
+    additionalClasses: [...x2ManyField.additionalClasses || [], "o_field_one2many"],
 });
diff --git a/addons/stock/static/src/views/picking_form/stock_move_one2many.js b/addons/stock/static/src/views/picking_form/stock_move_one2many.js
index 757287eeb75..af2afacf7c6 100644
--- a/addons/stock/static/src/views/picking_form/stock_move_one2many.js
+++ b/addons/stock/static/src/views/picking_form/stock_move_one2many.js
@@ -29,11 +29,11 @@ MovesListRenderer.components = { ...ListRenderer.components, ViewButton: MoveVie
 
 export class StockMoveX2ManyField extends X2ManyField {}
 StockMoveX2ManyField.components = { ...X2ManyField.components, ListRenderer: MovesListRenderer };
-StockMoveX2ManyField.additionalClasses = ['o_field_one2many'];
 
 export const stockMoveX2ManyField = {
     ...x2ManyField,
     component: StockMoveX2ManyField,
+    additionalClasses: [...x2ManyField.additionalClasses || [], "o_field_one2many"],
 };
 
 registry.category("fields").add("stock_move_one2many", stockMoveX2ManyField);
diff --git a/addons/survey/static/src/question_page/question_page_one2many_field.js b/addons/survey/static/src/question_page/question_page_one2many_field.js
index 9f3956720b4..93ef62b4723 100644
--- a/addons/survey/static/src/question_page/question_page_one2many_field.js
+++ b/addons/survey/static/src/question_page/question_page_one2many_field.js
@@ -126,11 +126,12 @@ QuestionPageOneToManyField.defaultProps = {
     ...X2ManyField.defaultProps,
     editable: "bottom",
 };
-QuestionPageOneToManyField.additionalClasses = ["o_field_one2many"];
 
 export const questionPageOneToManyField = {
     ...x2ManyField,
     component: QuestionPageOneToManyField,
+    additionalClasses: [...x2ManyField.additionalClasses || [], "o_field_one2many"],
+    
 };
 
 registry.category("fields").add("question_page_one2many", questionPageOneToManyField);