diff --git a/CryptoExchange.Net/Sockets/SocketSubscription.cs b/CryptoExchange.Net/Sockets/SocketSubscription.cs
index 3031c83..fa77905 100644
--- a/CryptoExchange.Net/Sockets/SocketSubscription.cs
+++ b/CryptoExchange.Net/Sockets/SocketSubscription.cs
@@ -148,7 +148,7 @@ namespace CryptoExchange.Net.Sockets
 
         public void InvokeExceptionHandler(Exception e)
         {
-            Exception(e);
+            Exception?.Invoke(e);
         }
 
         public async Task Close()