diff --git a/matlab/utilities/dataset/lagged.m b/matlab/utilities/dataset/lagged.m
index 18e3ca98b..276f6b785 100644
--- a/matlab/utilities/dataset/lagged.m
+++ b/matlab/utilities/dataset/lagged.m
@@ -9,7 +9,7 @@ function xlag = lagged(x, n)
 % OUTPUT
 % xlag = backward shifted series
 
-% Copyright (C) 2017 Dynare Team
+% Copyright (C) 2017-2021 Dynare Team
 %
 % This file is part of Dynare.
 %
@@ -32,7 +32,7 @@ end
 
 x=x(:);
 if n>0
-xlag=[NaN(n,1); x(1:end-n)];
+    xlag=[NaN(n,1); x(1:end-n)];
 else
-xlag=[x(abs(n)+1:end); NaN(abs(n),1)];
+    xlag=[x(abs(n)+1:end); NaN(abs(n),1)];
 end
\ No newline at end of file