diff --git a/src/gui/event-editor/gcal-date-chooser-day.ui b/src/gui/event-editor/gcal-date-chooser-day.ui
index b18db55f..51579e14 100644
--- a/src/gui/event-editor/gcal-date-chooser-day.ui
+++ b/src/gui/event-editor/gcal-date-chooser-day.ui
@@ -14,6 +14,9 @@
         <property name="hexpand">True</property>
         <property name="valign">center</property>
         <property name="vexpand">True</property>
+        <style>
+          <class name="numeric"/>
+        </style>
       </object>
     </child>
   </template>