diff --git a/data/ui/window.ui b/data/ui/window.ui
index 0acb8c0b1ab336f6dc34398c118ce6712a65b8b1..7afb0dc1bb1ad35917ee00b3196f3fdbb253349c 100644
--- a/data/ui/window.ui
+++ b/data/ui/window.ui
@@ -10,6 +10,9 @@
     <signal name="key-press-event" handler="key_pressed" object="GcalWindow" swapped="no"/>
     <signal name="window-state-event" handler="window_state_changed" object="GcalWindow" swapped="no"/>
     <property name="active-date" bind-source="search_view" bind-property="active-date" bind-flags="default|sync-create"/>
+    <style>
+      <class name="org-gnome-Calendar"/>
+    </style>    
     <child>
       <object class="GtkOverlay" id="views_overlay">
         <property name="visible">True</property>