diff --git a/matlab/modules/dates b/matlab/modules/dates
index f1dd6aa1e..03a409517 160000
--- a/matlab/modules/dates
+++ b/matlab/modules/dates
@@ -1 +1 @@
-Subproject commit f1dd6aa1e166f5dee77241737252260f7ea50946
+Subproject commit 03a409517a9dc373eec8a0b6c98480f0fc8c145c
diff --git a/matlab/modules/dseries b/matlab/modules/dseries
index 79dee92ed..71658685e 160000
--- a/matlab/modules/dseries
+++ b/matlab/modules/dseries
@@ -1 +1 @@
-Subproject commit 79dee92ed04103757a7f6c380b4e1c3161d063e9
+Subproject commit 71658685e306f837a2b610f7ab2050db54a5399d
diff --git a/matlab/utilities/general/isint.m b/matlab/utilities/general/isint.m
index c40ef792e..f6ed5a64e 100644
--- a/matlab/utilities/general/isint.m
+++ b/matlab/utilities/general/isint.m
@@ -33,7 +33,7 @@ function [b,c,d] = isint(a)
 % along with Dynare.  If not, see <http://www.gnu.org/licenses/>.
 
 if ~isnumeric(a)
-    b = 0;
+    b = false;
     if nargout>1
         c = [];
         d = [];
diff --git a/preprocessor/ModFile.cc b/preprocessor/ModFile.cc
index 06c9bf82c..57e2e188c 100644
--- a/preprocessor/ModFile.cc
+++ b/preprocessor/ModFile.cc
@@ -673,8 +673,6 @@ ModFile::writeOutputFiles(const string &basename, bool clear_all, bool clear_glo
 
   mOutputFile << "tic0 = tic;" << endl
               << "% Save empty dates and dseries objects in memory." << endl
-              << "dates('initialize');" << endl
-              << "dseries('initialize');" << endl
               << "% Define global variables." << endl
               << "global M_ options_ oo_ estim_params_ bayestopt_ dataset_ dataset_info estimation_info ys0_ ex0_" << endl
               << "options_ = [];" << endl