diff --git a/.github/dev.yml b/.github/dev.yml
index 7893558..567ecd3 100644
--- a/.github/dev.yml
+++ b/.github/dev.yml
@@ -1,7 +1,7 @@
 pr: none
 trigger: [ master ]
 
-name: 4.1.6-dev.$(Rev:r)
+name: 4.1.7-dev.$(Rev:r)
 
 pool:
   vmImage: ubuntu-latest
diff --git a/src/Client.cs b/src/Client.cs
index 5efd138..5bb497f 100644
--- a/src/Client.cs
+++ b/src/Client.cs
@@ -49,7 +49,8 @@ namespace WTelegram
 		/// <summary>Size of chunks when uploading/downloading files. Reduce this if you don't have much memory</summary>
 		public int FilePartSize { get; set; } = 512 * 1024;
 		/// <summary>Is this Client instance the main or a secondary DC session</summary>
-		public bool IsMainDC => (_dcSession?.DataCenter?.id - _session.MainDC) is null or 0;
+		public bool IsMainDC => _dcSession?.DataCenter?.flags.HasFlag(DcOption.Flags.media_only) != true
+			&& (_dcSession?.DataCenter?.id - _session.MainDC) is null or 0;
 		/// <summary>Has this Client established connection been disconnected?</summary>
 		public bool Disconnected => _tcpClient != null && !(_tcpClient.Client?.Connected ?? false);
 		/// <summary>ID of the current logged-in user or 0</summary>