How can I stop TexStudio flagging math symbols in a preamble declaration as 'outside math environment'

Putting the below commands in the preamble of a document causes TexStudio to wrongly flag "math command outside math env" (as illustrated)

The declaration I found on the list at absolute value symbols. Is there any way to prevent TexStudio doing this?

Note: This is not the question of how to make TexStudio recognise the DeclarePairedDelimiter command which is answered by editing the .cwl file