diff --git a/addons/project/views/project_portal_project_task_templates.xml b/addons/project/views/project_portal_project_task_templates.xml
index 97a8a32541f..f6458c06772 100644
--- a/addons/project/views/project_portal_project_task_templates.xml
+++ b/addons/project/views/project_portal_project_task_templates.xml
@@ -219,7 +219,7 @@
                                 <div class="col-12 col-md-9">
                                     <div class="d-flex align-items-center gap-2">
                                         <t t-call="project.portal_my_tasks_priority_widget_template">
-                                            <t t-set="classes">fs-4</t>
+                                            <t t-set="classes" t-translation="off">fs-4</t>
                                         </t>
                                         <h3 t-field="task.name" class="text-truncate my-0"/>
                                         <small class="text-muted d-none d-md-inline align-self-end">(#<span t-field="task.id"/>)</small>
diff --git a/addons/survey/views/survey_templates_statistics.xml b/addons/survey/views/survey_templates_statistics.xml
index 27352aee1bf..c5b32868a2f 100644
--- a/addons/survey/views/survey_templates_statistics.xml
+++ b/addons/survey/views/survey_templates_statistics.xml
@@ -159,7 +159,7 @@
             <nav class="navbar navbar-light rounded">
                 <div t-if="question_and_page_data" class="justify-content-between w-100">
                     <ul class="nav o_survey_results_topbar_dropdown_filters">
-                        <t t-set="dropdown_item_classes">dropdown-item d-flex align-items-center justify-content-between</t>
+                        <t t-set="dropdown_item_classes" t-translation="off">dropdown-item d-flex align-items-center justify-content-between</t>
                         <li class="nav-item dropdown me-2 my-1">
                             <a href="#" role="button" data-bs-toggle="dropdown"
                                t-attf-class="btn btn-outline-primary dropdown-toggle #{'active' if search_finished else ''}">
diff --git a/addons/test_website/tests/test_website_controller_page.py b/addons/test_website/tests/test_website_controller_page.py
index aa2c284e6a4..7d48be6b28a 100644
--- a/addons/test_website/tests/test_website_controller_page.py
+++ b/addons/test_website/tests/test_website_controller_page.py
@@ -25,7 +25,7 @@ class TestWebsiteControllerPage(HttpCase):
             "type": "qweb",
             "model": cls.model.model,
             "arch": """<t t-call="website.layout">
-                <t t-set="_activeClasses">border-primary</t>
+                <t t-set="_activeClasses" t-translation="off">border-primary</t>
                 <div t-attf-class="listing_layout_switcher btn-group ms-3" t-att-data-active-classes="_activeClasses" t-att-data-view-id="view_id">
                     <input type="radio" class="btn-check" name="wstudio_layout" id="o_wstudio_apply_grid" value="grid" t-att-checked="'checked' if layout_mode != 'list' else None"/>
                     <label t-attf-class="btn btn-light #{_activeClasses if layout_mode != 'list' else None} o_wstudio_apply_grid" title="Grid" for="o_wstudio_apply_grid">
diff --git a/addons/website_event/views/event_templates_page_registration.xml b/addons/website_event/views/event_templates_page_registration.xml
index 7b34e00c826..f320ced7e63 100644
--- a/addons/website_event/views/event_templates_page_registration.xml
+++ b/addons/website_event/views/event_templates_page_registration.xml
@@ -132,7 +132,7 @@
         <div class="d-flex flex-wrap justify-content-between align-items-center w-100 mb-3">
             <h4 class="mb-0">Tickets</h4>
             <t t-call="website_event.registration_configure_tickets_button" t-if="request.env.user.has_group('event.group_event_manager')">
-                <t t-set="linkClasses">ms-2</t>
+                <t t-set="linkClasses" t-translation="off">ms-2</t>
             </t>
         </div>
         <button t-if="event.event_registrations_open" type="button" data-bs-toggle="modal" data-bs-target="#modal_ticket_registration" class="btn btn-primary w-100">Register</button>
@@ -149,7 +149,7 @@
                     </em>
                     <t t-call="website_event.registration_configure_tickets_button"
                         t-if="request.env.user.has_group('event.group_event_manager')">
-                            <t t-set="linkClasses">alert-link my-3</t>
+                            <t t-set="linkClasses" t-translation="off">alert-link my-3</t>
                     </t>
                 </div>
                 <button class="btn btn-danger" disabled="1">Registrations not yet open</button>
diff --git a/addons/website_sale/views/templates.xml b/addons/website_sale/views/templates.xml
index 7993cbebd7c..61c503dfea0 100644
--- a/addons/website_sale/views/templates.xml
+++ b/addons/website_sale/views/templates.xml
@@ -500,7 +500,7 @@
     </template>
 
     <template id="website_sale.add_grid_or_list_option" active="True" name="Grid or List button">
-        <t t-set="_activeClasses">active</t>
+        <t t-set="_activeClasses" t-translation="off">active</t>
         <div t-attf-class="o_wsale_apply_layout btn-group {{_classes}}" t-att-data-active-classes="_activeClasses">
             <input type="radio" class="btn-check" name="wsale_products_layout" id="o_wsale_apply_grid"  t-att-checked="'checked' if layout_mode != 'list' else None" value="grid"/>
             <label t-attf-class="btn btn-{{navClass}} #{_activeClasses if layout_mode != 'list' else None} o_wsale_apply_grid" title="Grid" for="o_wsale_apply_grid">
@@ -2035,7 +2035,7 @@
                                             </div>
                                         </t>
                                         <t t-else="">
-                                            <input type="hidden" name="use_same" t-att-value="partner_id == website_sale_order.partner_shipping_id.id == website_sale_order.partner_invoice_id.id"/>                                       
+                                            <input type="hidden" name="use_same" t-att-value="partner_id == website_sale_order.partner_shipping_id.id == website_sale_order.partner_invoice_id.id"/>
                                         </t>
                                     </div>