diff --git a/matlab/@dynSeries/plus.m b/matlab/@dynSeries/plus.m
index dd0e1037f7c6601a2c348afc9f35f3b64e0a45bd..b377da3f83f143885a666f2f8af215bd48d3e875 100644
--- a/matlab/@dynSeries/plus.m
+++ b/matlab/@dynSeries/plus.m
@@ -40,7 +40,7 @@ function A = plus(B,C)
 % along with Dynare.  If not, see <http://www.gnu.org/licenses/>.
 
 % AUTHOR(S) stephane DOT adjemian AT univ DASH lemans DOT fr
-[B, C] = align(B, C);
+%[B, C] = align(B, C);
 if ~isequal(B.vobs,C.vobs) && ~(isequal(B.vobs,1) || isequal(C.vobs,1))
     error(['dynSeries::plus: Cannot add ' inputname(1) ' and ' inputname(2) ' (wrong number of variables)!'])
 else