diff --git a/app/angular/src/demo/welcome.component.ts b/app/angular/src/demo/welcome.component.ts
index 3697700f54b8..ab8309c1a581 100644
--- a/app/angular/src/demo/welcome.component.ts
+++ b/app/angular/src/demo/welcome.component.ts
@@ -48,7 +48,7 @@ import { Component, Output, EventEmitter } from '@angular/core';
       main {
         padding: 15px;
         line-height: 1.4;
-        fontfamily: 'Helvetica Neue', Helvetica, 'Segoe UI', Arial, freesans, sans-serif;
+        font-family: 'Helvetica Neue', Helvetica, 'Segoe UI', Arial, freesans, sans-serif;
         background-color: #ffffff;
       }