diff --git a/addons/web/static/src/core/confirmation_dialog/confirmation_dialog.js b/addons/web/static/src/core/confirmation_dialog/confirmation_dialog.js
index 94388588b10..d3608e8b169 100644
--- a/addons/web/static/src/core/confirmation_dialog/confirmation_dialog.js
+++ b/addons/web/static/src/core/confirmation_dialog/confirmation_dialog.js
@@ -68,12 +68,14 @@ ConfirmationDialog.props = {
     body: String,
     confirm: { type: Function, optional: true },
     confirmLabel: { type: String, optional: true },
+    confirmClass: { type: String, optional: true },
     cancel: { type: Function, optional: true },
     cancelLabel: { type: String, optional: true },
 };
 ConfirmationDialog.defaultProps = {
     confirmLabel: _lt("Ok"),
     cancelLabel: _lt("Cancel"),
+    confirmClass: "btn-primary",
     title: _lt("Confirmation"),
 };
 
diff --git a/addons/web/static/src/core/confirmation_dialog/confirmation_dialog.xml b/addons/web/static/src/core/confirmation_dialog/confirmation_dialog.xml
index 5383cef8b08..d202866c91c 100644
--- a/addons/web/static/src/core/confirmation_dialog/confirmation_dialog.xml
+++ b/addons/web/static/src/core/confirmation_dialog/confirmation_dialog.xml
@@ -5,7 +5,7 @@
     <Dialog size="'md'" title="props.title" modalRef="modalRef">
       <p t-out="props.body" class="text-prewrap"/>
       <t t-set-slot="footer" owl="1">
-        <button class="btn btn-primary" t-on-click="_confirm" t-esc="props.confirmLabel"/>
+        <button class="btn" t-att-class="props.confirmClass" t-on-click="_confirm" t-esc="props.confirmLabel"/>
         <button t-if="props.cancel" class="btn btn-secondary" t-on-click="_cancel" t-esc="props.cancelLabel"/>
       </t>
     </Dialog>
@@ -15,7 +15,7 @@
     <Dialog size="'sm'" title="props.title" contentClass="props.contentClass">
       <p t-out="props.body" class="text-prewrap"/>
       <t t-set-slot="footer" owl="1">
-        <button class="btn btn-primary" t-on-click="_confirm" t-esc="props.confirmLabel"/>
+        <button class="btn" t-att-class="props.confirmClass" t-on-click="_confirm" t-esc="props.confirmLabel"/>
         <button t-if="props.cancel" class="btn btn-secondary" t-on-click="_cancel" t-esc="props.cancelLabel"/>
       </t>
     </Dialog>