diff --git a/matlab/isauxiliary.m b/matlab/isauxiliary.m
index a3788dde09dbcbe0a64edececc11743654ece4ea..cae36d209b3bd5c5492a10ee6476fe3651f388d9 100644
--- a/matlab/isauxiliary.m
+++ b/matlab/isauxiliary.m
@@ -24,8 +24,9 @@ function b = isauxiliary(var, type)
 %   -  8,    Variable for Diff operator
 %   -  9,    Lag on Diff
 %   - 10,    Unary operator (log, exp)
+%   - 11,    Lead on Diff
 
-% Copyright (C) 2018 Dynare Team
+% Copyright (C) 2018-2019 Dynare Team
 %
 % This file is part of Dynare.
 %