This is my first time using Angular Material, I am having an issue with mat-icons. my index.html has: <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet"> In my shared module, I have the icons imported: import { NgModule } from '@angular/core'; import { CommonModule } from '@angular/common'; import { MatButtonModule, MatCardModule, MatIconModule, MatMenuModule, MatToolbarModule, } from '@angular/material'; @NgModule({ imports: [ CommonModule, MatButtonModule, MatCardModule, MatIconModule, MatMenuModule, MatToolbarModule ], exports: [ MatButtonModule, MatCardModule, MatIconModule, MatMenuModule, MatToolbarModule ], declarations: [] }) export class SharedModule { } then I import the SharedModule into my LoginModule: import { NgModule } from '@angular/core'; import { CommonModule } from '@angular/common'; import { SharedModule } from '../../shared/shared.module'; import { LoginRoutingModule } from './login.routing.module'; import { LoginContainerComponent } from './login-container/login-container.component'; import { LoginViewComponent } from './login-view/login-view.component'; @NgModule({ imports: [ CommonModule, LoginRoutingModule, SharedModule ], declarations: [ LoginContainerComponent, LoginViewComponent ] }) export class LoginModule { } finally I go to use the mat-icon in the view: <mat-card> <mat-card-title-group> <mat-card-title> Welcome to Track-It </mat-card-title> <mat-card-subtitle> In order to use all of Track-it's goodness, please login... </mat-card-subtitle> </mat-card-title-group> <mat-card-content> Lorem, ipsum dolor sit amet consectetur adipisicing elit. Maxime quod labore autem. Sunt expedita ullam quis in deserunt rem eum, quas culpa quo aut eius consequuntur magni. Voluptates, mollitia ullam. </mat-card-content> <mat-card-actions [align]="'end'"> <button mat-flat-button> Login <mat-icon svgIcon="done"></mat-icon> </button> </mat-card-actions> </mat-card> Hover with this I get the following error: Error retrieving icon: Unable to find icon with the name ":done" I am by no means new to Angular, but definately new to Angular Material, so not to sure what is happening here. What I have above should be working. Thoughts? Continue reading...