diff --git a/src/API_functions_h2t.c b/src/API_functions_h2t.c
index 4f68c5a..26f1711 100644
--- a/src/API_functions_h2t.c
+++ b/src/API_functions_h2t.c
@@ -117,8 +117,8 @@ int _H2T_Init_mesh_var(va_list argptr) {
 }
 
 int  H2T_Set_meshSize(MMG5_pMesh mesh,int np,int nhexa,int nquad,int na) {
-  int ne,k;
-
+  int ne;
+  MMG5_int k;
   ne = 6*nhexa;
 
   /* in the output there will be 2*nquad triangles */
diff --git a/src/chk.c b/src/chk.c
index a89fae7..3737e1f 100644
--- a/src/chk.c
+++ b/src/chk.c
@@ -69,14 +69,15 @@ double H2T_quickvol(double *c1,double *c2,double *c3,double *c4) {
  *
  */
 int H2T_chkorient(MMG5_pMesh mmgMesh,int* hexa,int nhex) {
-  int     nbado,k,i,iadr,ph[8];
+  int     nbado,k,i,ph[8];
   double  volref,volhex;
+  MMG5_int iadr;
 
   nbado = 0;
   volref = 1;
 
   for (k=1; k<=nhex; k++) {
-    iadr = 9*k;
+    iadr = (MMG5_int)9*k;
     for(i=0 ; i<8 ; i++)
       ph[i] = hexa[iadr+i];
 
diff --git a/src/cut.c b/src/cut.c
index 7104b68..84bdb76 100644
--- a/src/cut.c
+++ b/src/cut.c
@@ -260,11 +260,12 @@ int H2T_chkAdja(MMG5_pMesh mesh,int* listhexa,MMG5_int* adjahex,int nhex) {
  */
 int H2T_cuthex(MMG5_pMesh mesh,pHedge hed,int* listhexa,MMG5_int* adjahex,int nhex) {
   MMG5_pPoint    ppt;
-  int            i,ih,k,nu1,nu2,nu3,nu4,adj,icas0,icasopp,nncut;
+  int            i,ih,nu1,nu2,nu3,nu4,adj,icas0,icasopp,nncut;
   int            *list,*mark,p[8],ipil,icurc,iface,iadr;
   int            iel,ip,ph[8];
   double         c[3];
   int            ddebug,ncut;
+  MMG5_int k;
 
   if ( mesh->info.ddebug ) {
     int count = H2T_chkAdja(mesh,listhexa,adjahex,nhex);
diff --git a/src/hashhexa.c b/src/hashhexa.c
index 5777e5b..ebfe1ef 100644
--- a/src/hashhexa.c
+++ b/src/hashhexa.c
@@ -249,8 +249,8 @@ int H2T_hashQuad(MMG5_pMesh mesh,MMG5_Hash *hash) {
  */
 int H2T_hashGetRef(MMG5_pMesh mesh,MMG5_Hash *hash) {
   MMG5_pTetra pt;
-  MMG5_int         *adja;
-  int         ie,i,nt,ia,ib,ic,k,ref;
+  MMG5_int    *adja, ie;
+  int         i,nt,ia,ib,ic,k,ref;
 
   /* Create tetrahedra adjacency */
   if( !MMG3D_hashTetra(mesh,0) ) return 0;