Angular Material icons not working

I've installed Material for angular,

I've imported on my app module MatIconModule (with import { MatIconModule } from '@angular/material/icon';)

I've added it under my ngmodule imports with:

@NgModule({
    imports: [ 
//...
MatIconModule, 
//...

I've imported all stylesheets

And I've also imported it in my app component that is actually (trying to) using them (with another import {MatIconModule} from '@angular/material/icon'; line at the beginning of it).

But material icons still not appear.

For example, with this line:

<button mat-icon-button (click)="snav.toggle()"><mat-icon>menu</mat-icon></button>

I'm expecting something like this:

But i get this:

Got any suggestion?