diff --git a/addons/mail/views/mail_channel_views.xml b/addons/mail/views/mail_channel_views.xml
index f60d63a8a13..2e50b5238bf 100644
--- a/addons/mail/views/mail_channel_views.xml
+++ b/addons/mail/views/mail_channel_views.xml
@@ -66,7 +66,7 @@
                                         <field name="description"/>
                                     </p>
                                     <button type="object" attrs="{'invisible':[('is_subscribed','=',True)]}" class="btn btn-primary pull-right btn-sm" name="channel_join_and_get_info">Join</button>
-                                    <button type="object" attrs="{'invisible':[('is_subscribed','=',False)]}" class="btn btn-secondary pull-right btn-sm" name="action_unfollow">Leave</button>
+                                    <button type="object" attrs="{'invisible':[('is_subscribed','=',False)]}" class="btn btn-default pull-right btn-sm" name="action_unfollow">Leave</button>
                                 </div>
                             </div>
                         </t>
diff --git a/addons/report/static/src/xml/report.xml b/addons/report/static/src/xml/report.xml
index 563abcbb621..741022259d0 100644
--- a/addons/report/static/src/xml/report.xml
+++ b/addons/report/static/src/xml/report.xml
@@ -5,11 +5,11 @@
             <button type="button" class="btn btn-primary btn-sm o_report_print" title="Print">Print</button>
         </div>
         <div class="o_edit_mode_available">
-            <button type="button" class="btn btn-secondary btn-sm o_report_edit" title="Edit">Edit</button>
+            <button type="button" class="btn btn-default btn-sm o_report_edit" title="Edit">Edit</button>
         </div>
         <div class="o_report_edit_mode">
             <button type="button" class="btn btn-primary btn-sm o_report_save" title="Save">Save</button>
-            <button type="button" class="btn btn-secondary btn-sm o_report_discard" title="Discard">Discard</button>
+            <button type="button" class="btn btn-default btn-sm o_report_discard" title="Discard">Discard</button>
         </div>
     </t>
 </template>
\ No newline at end of file