diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences.tt
index ec6fbfb8b5..b4e88f8eaf 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences.tt
@@ -58,7 +58,7 @@
     <div class="prefs-tab">
     <h2>[% TAB.tab_title | html %] preferences</h2>
     <form action="/cgi-bin/koha/admin/preferences.pl" method="post">
-        [% UNLESS ( searchfield ) %]<div id="toolbar"><button class="save-all submit" type="submit">Save all [% TAB.tab_title | html %] preferences</button></div>[% END %]
+        [% UNLESS ( searchfield ) %]<div id="toolbar"><button class="save-all submit btn btn-primary" type="submit">Save all [% TAB.tab_title | html %] preferences</button></div>[% END %]
         <input type="hidden" name="op" value="save" />
         <input type="hidden" name="tab" value="[% TAB.tab_id | html %]" />
 
@@ -200,7 +200,7 @@
             [% IF ( loop.last ) %]</tbody></table>[% END %]
             [% END %]
         [% END %]
-        <fieldset class="action"><button class="save-all submit" type="submit">Save all [% TAB.tab_title | html %] preferences</button> <a href="/cgi-bin/koha/admin/preferences.pl" class="force_reload cancel">Cancel</a></fieldset>
+        <fieldset class="action"><button class="save-all submit btn btn-primary" type="submit">Save all [% TAB.tab_title | html %] preferences</button> <a href="/cgi-bin/koha/admin/preferences.pl" class="force_reload cancel">Cancel</a></fieldset>
     </form>
     </div>
     [% END %]
@@ -233,7 +233,7 @@
                 </form>
             </div>
             <div class="modal-footer">
-                <button id="saveModalPrefs" data-target="" type="button" class="btn btn-default">Save</button>
+                <button id="saveModalPrefs" data-target="" type="button" class="btn btn-primary">Save</button>
                 <button type="button" class="btn btn-link cancel" data-dismiss="modal">Cancel</button>
             </div>
         </div>