diff --git a/src/UI/Content/Overrides/fullcalendar.less b/src/UI/Content/Overrides/fullcalendar.less
index d8f3accd9..9af8602c3 100644
--- a/src/UI/Content/Overrides/fullcalendar.less
+++ b/src/UI/Content/Overrides/fullcalendar.less
@@ -19,3 +19,9 @@
     padding-left: 5px;
   }
 }
+
+.fc-header {
+  .fc-state-active {
+    z-index: 1;
+  }
+}