diff --git a/SharpRss/RssService.cs b/SharpRss/RssService.cs
index 6eea5de..24b4009 100644
--- a/SharpRss/RssService.cs
+++ b/SharpRss/RssService.cs
@@ -1,5 +1,8 @@
+using System.Collections.Generic;
 using System.Linq;
+using System.Threading.Tasks;
 using CodeHollow.FeedReader;
+using SharpRss.Models;
 
 namespace SharpRss
 {
@@ -9,6 +12,12 @@ namespace SharpRss
         {
             //TODO: Check if db exists else create.
         }
+
+        public async Task<HashSet<CategoryItem>> GetCategories()
+        {
+            return new HashSet<CategoryItem>();
+        }
+
         public async void GetFeeds()
         {
             //TODO: Load from db or something.
diff --git a/WebSharpRSS/Shared/SideGuide.razor b/WebSharpRSS/Shared/SideGuide.razor
index ab55667..b407540 100644
--- a/WebSharpRSS/Shared/SideGuide.razor
+++ b/WebSharpRSS/Shared/SideGuide.razor
@@ -3,6 +3,8 @@
 @using CodeHollow.FeedReader
 @using Serilog
 
+@inject RssService _rssService
+
 <MudStack Spacing="2">
     <MudNavMenu>
         <MudNavLink Href="/" Icon="@Icons.Material.Filled.Home">Home</MudNavLink>