diff --git a/addons/web/static/src/xml/web_calendar.xml b/addons/web/static/src/xml/web_calendar.xml
index ee45d85e5ab..e38d98e46de 100644
--- a/addons/web/static/src/xml/web_calendar.xml
+++ b/addons/web/static/src/xml/web_calendar.xml
@@ -74,7 +74,7 @@
     <div t-name="CalendarView.quick_create" class="o_calendar_quick_create">
         <div class="form-group">
             <label for='name' class='control-label'>Summary:</label>
-            <input type='text' name='name'/>
+            <input type='text' name='name' class="o_input"/>
         </div>
     </div>
 </template>