diff --git a/include/ntapi/nt_socket.h b/include/ntapi/nt_socket.h
index 65f7483..57b0801 100644
--- a/include/ntapi/nt_socket.h
+++ b/include/ntapi/nt_socket.h
@@ -310,6 +310,12 @@ typedef struct _nt_socket {
 			uint32_t	protocol;
 		};
 
+		struct {
+			uint16_t	vfdtype;
+			uint16_t	vfdflags;
+			uint32_t	vfdpid;
+		};
+
 		void *	hpair;
 		void *	hasync;
 		void *	hobject;