diff --git a/course/format/templates/local/content/cm/completion_dialog.mustache b/course/format/templates/local/content/cm/completion_dialog.mustache
index 98106e7f6f5..7dabcddc436 100644
--- a/course/format/templates/local/content/cm/completion_dialog.mustache
+++ b/course/format/templates/local/content/cm/completion_dialog.mustache
@@ -111,7 +111,7 @@
     {{#editing}}
         {{#editurl}}
             <div class="editcompletion border-top mt-3 pt-3">
-                <a href="{{editurl}}" class="px-2 py-1">
+                <a href="{{editurl}}" class="btn btn-sm px-2 py-0">
                     {{#hasconditions}}{{#pix}} i/edit, core {{/pix}}{{#str}}editconditions, completion{{/str}}{{/hasconditions}}
                     {{^hasconditions}}{{#pix}} t/add, core {{/pix}}{{#str}}addconditions, completion{{/str}}{{/hasconditions}}
                 </a>