diff --git a/mex/2007b/A_times_B_kronecker_C.mexa64 b/mex/2007b/A_times_B_kronecker_C.mexa64
index 9dd6b620c..f5c04c8bd 100755
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diff --git a/mex/2007b/gensylv.mexa64 b/mex/2007b/gensylv.mexa64
index 03210dfae..e39f75de5 100755
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diff --git a/mex/2007b/mjdgges.mexa64 b/mex/2007b/mjdgges.mexa64
index d871f2530..d83a84658 100755
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diff --git a/mex/2007b/simulate.mexa64 b/mex/2007b/simulate.mexa64
index afa9012b9..6b99ca0a3 100755
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diff --git a/mex/2007b/sparse_hessian_times_B_kronecker_C.mexa64 b/mex/2007b/sparse_hessian_times_B_kronecker_C.mexa64
index df86b19d8..d054df6f5 100755
Binary files a/mex/2007b/sparse_hessian_times_B_kronecker_C.mexa64 and b/mex/2007b/sparse_hessian_times_B_kronecker_C.mexa64 differ
diff --git a/mex/sources/build.m b/mex/sources/build.m
index 7d4bd6aaa..4af6a8754 100644
--- a/mex/sources/build.m
+++ b/mex/sources/build.m
@@ -19,7 +19,7 @@ if strcmpi('GLNX86', computer) || strcmpi('GLNXA64', computer) ...
         || strcmpi('MACI', computer) || strcmpi('MAC', computer)
     % GNU/Linux (x86-32 or x86-64) or MacOS (Intel or PPC)
     if strcmpi('GLNXA64', computer) % 64 bits ?
-        COMPILE_OPTIONS = [ COMPILE_OPTIONS ' -largeArrayDims -DMX_COMPAT_32' ];
+        COMPILE_OPTIONS = [ COMPILE_OPTIONS ' -largeArrayDims'];
     end
     LAPACK_PATH = '-lmwlapack';
     if VERSION <= 7.4
diff --git a/mex/sources/kronecker/A_times_B_kronecker_C.cc b/mex/sources/kronecker/A_times_B_kronecker_C.cc
index 9a7f7dc95..8692e8ea3 100644
--- a/mex/sources/kronecker/A_times_B_kronecker_C.cc
+++ b/mex/sources/kronecker/A_times_B_kronecker_C.cc
@@ -23,7 +23,7 @@ typedef int mwSize;
 #    define DGEMM dgemm
 #  endif
 extern "C"{
-  int DGEMM(char*, char*, mwSize*, mwSize*, mwSize*, double*, double*, mwSize*, double*, mwSize*, double*, double*, mwSize*);
+  int DGEMM(char*, char*, int*, int*, int*, double*, double*, int*, double*, int*, double*, double*, int*);
 }
 #else
 #  include "blas.h"
@@ -31,7 +31,7 @@ extern "C"{
 #endif
 
 void full_A_times_kronecker_B_C(double *A, double *B, double *C, double *D,
-			   mwSize mA, mwSize nA, mwSize mB, mwSize nB, mwSize mC, mwSize nC)
+				int mA, int nA, int mB, int nB, int mC, int nC)
 {
   const unsigned long shiftA = mA*mC ;
   const unsigned long shiftD = mA*nC ;
@@ -51,7 +51,7 @@ void full_A_times_kronecker_B_C(double *A, double *B, double *C, double *D,
 }
 
 
-void full_A_times_kronecker_B_B(double *A, double *B, double *D, mwSize mA, mwSize nA, mwSize mB, mwSize nB)
+void full_A_times_kronecker_B_B(double *A, double *B, double *D, int mA, int nA, int mB, int nB)
 {
   const unsigned long int shiftA = mA*mB ;
   const unsigned long int shiftD = mA*nB ;
@@ -128,10 +128,10 @@ void mexFunction( int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[] )
   // Computational part:
   if (nrhs == 2)
     {
-      full_A_times_kronecker_B_B(A, B, &D[0], mA, nA, mB, nB);
+      full_A_times_kronecker_B_B(A, B, &D[0], (int) mA, (int) nA, (int) mB, (int) nB);
     }
   else
     {
-      full_A_times_kronecker_B_C(A, B, C, &D[0], mA, nA, mB, nB, mC, nC);
+      full_A_times_kronecker_B_C(A, B, C, &D[0], (int) mA, (int) nA, (int) mB, (int) nB, (int) mC, (int) nC);
     }
 }