diff --git a/lib/csharp/src/TApplicationException.cs b/lib/csharp/src/TApplicationException.cs
index 9aaf6f7..4a1b2d2 100644
--- a/lib/csharp/src/TApplicationException.cs
+++ b/lib/csharp/src/TApplicationException.cs
@@ -26,7 +26,7 @@
 
 namespace Thrift
 {
-	public class TApplicationException : Exception
+	public class TApplicationException : TException
 	{
 		protected ExceptionType type;