diff --git a/src/Responders/GuildLoadedResponder.cs b/src/Responders/GuildLoadedResponder.cs
index 55e9673..cc8a687 100644
--- a/src/Responders/GuildLoadedResponder.cs
+++ b/src/Responders/GuildLoadedResponder.cs
@@ -71,6 +71,8 @@ public class GuildLoadedResponder : IResponder<IGuildCreate>
             return ResultExtensions.FromError(ownerResult);
         }
 
+        await MigrateDataAsync(data);
+
         _logger.LogInformation("Loaded guild \"{Name}\" ({ID}) owned by {Owner} ({OwnerID}) with {MemberCount} members",
             guild.Name, guild.ID, owner.GetTag(), owner.ID, guild.MemberCount);
 
@@ -94,6 +96,18 @@ public class GuildLoadedResponder : IResponder<IGuildCreate>
             GuildSettings.PrivateFeedbackChannel.Get(cfg), embedResult: embed, ct: ct);
     }
 
+    private static Task MigrateDataAsync(GuildData data)
+    {
+        var settings = data.Settings;
+
+        if (GuildSettings.Language.Get(settings).Name is "tt-RU")
+        {
+            GuildSettings.Language.Set(settings, "ru");
+        }
+
+        return Task.CompletedTask;
+    }
+
     private async Task<Result> SendDataLoadFailed(IGuild guild, GuildData data, IUser bot, CancellationToken ct)
     {
         var channelResult = await _utility.GetEmergencyFeedbackChannel(guild, data, ct);