diff --git a/.github/dev.yml b/.github/dev.yml
index 1bb91a7..def4305 100644
--- a/.github/dev.yml
+++ b/.github/dev.yml
@@ -2,7 +2,7 @@ pr: none
 trigger:
 - master
 
-name: 2.5.1-dev.$(Rev:r)
+name: 2.5.2-dev.$(Rev:r)
 
 pool:
   vmImage: ubuntu-latest
diff --git a/src/Client.cs b/src/Client.cs
index 507c351..0e1c651 100644
--- a/src/Client.cs
+++ b/src/Client.cs
@@ -630,7 +630,7 @@ namespace WTelegram
 					}
 					else if (PullPendingRequest(badMsgNotification.bad_msg_id) is Rpc rpc)
 					{
-						if (_bareRpc.msgId == badMsgNotification.bad_msg_id) _bareRpc = null;
+						if (_bareRpc?.msgId == badMsgNotification.bad_msg_id) _bareRpc = null;
 						rpc.tcs.SetException(new ApplicationException($"BadMsgNotification {badMsgNotification.error_code}"));
 					}
 					else