diff --git a/common/ASC.Core.Common/Users/DarkThemeSettings.cs b/common/ASC.Core.Common/Users/DarkThemeSettings.cs
index e5c2050a6a..e48e48ff80 100644
--- a/common/ASC.Core.Common/Users/DarkThemeSettings.cs
+++ b/common/ASC.Core.Common/Users/DarkThemeSettings.cs
@@ -47,7 +47,7 @@ public class DarkThemeSettings : ISettings
     {
         return new DarkThemeSettings
         {
-            Theme = DarkThemeSettingsEnum.Base,
+            Theme = DarkThemeSettingsEnum.System,
         };
     }
 }