diff --git a/WebSharpRSS/MainLayout.razor b/WebSharpRSS/MainLayout.razor
index e3df2c5..812780f 100644
--- a/WebSharpRSS/MainLayout.razor
+++ b/WebSharpRSS/MainLayout.razor
@@ -35,7 +35,7 @@
 </MudLayout>
 
 @code {
-    MudTheme _mainTheme = new MudTheme();
+    readonly MudTheme _mainTheme = new MudTheme();
     bool _darkTheme = true;
     bool _drawerOpen = true;
 
diff --git a/WebSharpRSS/sharp_rss.sqlite b/WebSharpRSS/sharp_rss.sqlite
index ce8d6f1..1f3cfdc 100644
Binary files a/WebSharpRSS/sharp_rss.sqlite and b/WebSharpRSS/sharp_rss.sqlite differ