diff --git a/src/components/app/app.ts b/src/components/app/app.ts
index de87511..30c70a0 100644
--- a/src/components/app/app.ts
+++ b/src/components/app/app.ts
@@ -40,7 +40,7 @@ export default class App extends Vue
 {
     public showLogin: boolean = true;
 
-    public courses = null;
+    public courses: Course[] = [];
 
     public selectedTab: string = "overall";