diff --git a/src/panels/calendar/ha-full-calendar.ts b/src/panels/calendar/ha-full-calendar.ts
index 569e3d6492..3cd139d303 100644
--- a/src/panels/calendar/ha-full-calendar.ts
+++ b/src/panels/calendar/ha-full-calendar.ts
@@ -478,6 +478,12 @@ export class HAFullCalendar extends LitElement {
 
         .fc-theme-standard .fc-scrollgrid {
           border: 1px solid var(--divider-color);
+          border-radius: var(--mdc-shape-small, 4px);
+        }
+
+        .fc-theme-standard td {
+          border-bottom-left-radius: var(--mdc-shape-small, 4px);
+          border-bottom-right-radius: var(--mdc-shape-small, 4px);
         }
 
         .fc-scrollgrid-section-header td {