MQTT Discovery and device_class for cover

Configuration
1

I built an MQTT autodiscovery device to use for my curtains, and I used the field ‘device_class’ to set it as a ‘curtain’ device (Cover - Home Assistant). But when the device shows up, it gives the icon ‘hass:blinds’, which is weird for a curtain. Is this correct, or am I missing something. The json for my device is:

{"name":"*Gordijnen",
"uniq_id":"test_cover1",
"dev_cla":"curtain",
"pos_t":"domus/test/uit/screen",
"cmd_t":"domus/test_in",
"pl_open":"O1",
"pl_cls":"C1",
"pl_stop":"S1",
"pos_open":100,
"pos_clsd":0,
"set_pos_t":"domus/test/in",
"set_pos_tpl":"{ \"POSITION1\": {{ position }} }",
"pos_tpl":"{{value_json.POSITION1}}",
"dev":{"ids":["domus_test_json"],"cns":[["ip","xx.xx.xx.xx"],["mac","YY.YY.YY.YY.YY.YY"]],"name":"Domus Mega Test","mdl":"Mega 2560","mf":"Arduino"}}
2

Yes. “curtain” is just an alias as far as the frontend is concerned: