Algolia - filters unexpected token string(organic)

When using the C# library to query an index in Algolia, the following error appeared after I attempted to filter the query on one of my facets:

filters: Unexpected token string(organic) expected end of filter at col 17

Algolia - unexpected token organic

How I was setting the filter was:

query.SetFilters("categories:a spaced value");

The error was because of the spaces in the filter/facet value I was trying to set. The correct way to call which resolved the error was:

query.SetFilters("categories:\"a spaced value\"");