[NTG-context] Wide descriptions protruding into the margin

Hi, with wide description heads I have the problem that the following description protrudes into the margin. \definedescription [description] [alternative=hanging, width=broad] \starttext \startdescription{conclusion that} \input knuth \stopdescription \startdescription{conclusion that the designer of a new system must not only be literally} \input knuth \stopdescription \stoptext In the second case the “Thus,” should be placed on the line after the head. How do I achieve that? My current workaround is to append a \hbox{ } to the problematic entries. Marco