diff --git a/src/tty/ntapi_tty_create_session.c b/src/tty/ntapi_tty_create_session.c
index 2874b6d..ac08ce4 100644
--- a/src/tty/ntapi_tty_create_session.c
+++ b/src/tty/ntapi_tty_create_session.c
@@ -138,6 +138,10 @@ int32_t __stdcall __ntapi_tty_create_session(
 	}
 
 	/* subsystem attributes */
+	__ntapi->tt_guid_copy(
+		&ssattr.abi,
+		&(nt_guid)NT_PROCESS_GUID_RTDATA);
+
 	ssattr.port_type	= port_attr.type;
 	ssattr.port_subtype	= port_attr.subtype;