diff --git a/vendor/built_in_modules/calendar/app/views/panel/calendar/back_end/cals/month_view.html.erb b/vendor/built_in_modules/calendar/app/views/panel/calendar/back_end/cals/month_view.html.erb
index bff812b0f..adf5f12e5 100644
--- a/vendor/built_in_modules/calendar/app/views/panel/calendar/back_end/cals/month_view.html.erb
+++ b/vendor/built_in_modules/calendar/app/views/panel/calendar/back_end/cals/month_view.html.erb
@@ -87,7 +87,7 @@
 			</tr>
 			<tr>
 				<td colspan="3"></td>
-				<td><div class="event" style="color: #ffcc00;">7pm - 9pm test event</div></td>
+				<td><div class="event single" style="color: #ffcc00;">7pm - 9pm test event</div></td>
 				<td colspan="3"></td>
 			</tr>
 		</table>