[GIS] Ogr2ogr: ERROR 1: Unable to find driver `PostgreSQL’

ogr2ogrosxpostgresql

I need to import geojson files into a local PostgreSQL9.6 database on OSX system.

ogr2ogr -f 'PostgreSQL' PG:"dbname=crossmap user=duccioa" "multigraph.geojson" -nln paris.multilayer

Ogr2ogr gives this error:

ERROR 1: Unable to find driver `PostgreSQL'

My GDAL2.1 library have been installed using kyngchaos binary.
I saw there are other posts on the topic but none of them resolved my problem. One issue is that I cannot figure out how to unistall the library (for example to reinstallit with HomeBrew).
The import used to work, I don't understand what went wrong at one point. The only thing I can think of is the installation of the latest version of QGIS 2.18.