Problema com selectmanycheckbox

<h:outputLabel value="Segunda Feira"
					style="font-size:18px; color:red;padding-bottom:10px;" />
				<br />
				<h:outputLabel value="11/01/2016"
					style="font-size:15px; color:red; padding-left:18px;" />
				<br /> <br />
				<p:selectManyCheckbox id="cbRefeicoes1" layout="responsive"
					columns="1" styleClass="menus">
					<f:selectItem itemLabel="Café da Manhã"
						itemValue="#{refeicao.dia1cafe}" />
					<f:selectItem itemLabel="Almoço"
						itemValue="#{refeicao.dia1almoco}" />
					<f:selectItem itemLabel="Janta"
						itemValue="#{refeicao.dia1janta}" />
					<f:selectItem itemLabel="Ceia"
						itemValue="#{refeicao.dia1ceia}" />
				</p:selectManyCheckbox>
			</div>