Response header status 404 when there are no search results

Our search results page is displaying in all cases but the Response Header “Status” will return 200 when results are present and return 404 when no results are listed. This seems wrong as the page used is the same.

Will post examples in private message below.

Plugins in use:
GeoDirectory Version 2.0.0.88
GeoDirectory Advanced Search Filters Version 2.0.0.16
GeoDirectory Ajax Duplicate Alert Version 2.0.0.2
GeoDirectory Custom Post Types Version 2.0.0.14
GeoDirectory Dashboard Version 0.0.1
GeoDirectory List Manager Version 2.1.0.5
GeoDirectory Location Manager Version 2.0.0.22
GeoDirectory Map Styles Version 2.0.0.2
GeoDirectory Marker Cluster Version 2.0.0.3
GeoDirectory Re-Captcha Version 2.0.0.2