bullets: custom list-style

Hello,

I do not want standard bullets so I put the following code in my css. But now I get a square instead of bullets. It seems that the font is not recognized …. who can help me?

.my_list li {
list-style: none;
}
.my_list li:before {
content: “\f101″;
font-family: ‘icomoon’;
padding-right: 18px;
}

preview:

https://www.droomwoningbouwen.nl/woonstijl-scandinavisch/