[NTG-context] Trailing spaces in descriptions

I want to have a description with a trailing ':' after the description term, so I have this: \def\FieldTitle#1{#1:} \definedescription [ReSTfield] [headstyle=bold, location=hanging, width=broad, distance=1em, command=\FieldTitle] But this leaves me with: Field : text ^^^ How do I get rid of the whitespace? -- Daniel Wallin