primefaces 3.5 calendar hour minute pattern javascript error

primefaces 3.5 calendar hour minute pattern javascript error

I'm using PF3.5 and when I use a calendar component with a pattern
including HH:mm I get the following javascript error and the caalendar
selctor icon is'nt shown: Uncaught Unexpected literal at position 2
This is de jsf code:
<p:calendar value="#{incidentDetail.incidentDateTime}" id="incident_date"
locale="#{ws.locale}" showOn="button" yearRange="-2:+1"
pattern="dd/MM/yyyy HH:mm" navigator="true" mindate="1900-01-01"
required="true" styleClass="required calmedium"/>
When I use pattern="dd/MM/yyyy" it works
Any solution how to solve this?