diff --git a/src/fix_move.cpp b/src/fix_move.cpp
index f5f7b8cadd457eddab99561b7aa72ba5be8a8768..3c079773820c1110cf5412911161b05a9b4cc8fe 100644
--- a/src/fix_move.cpp
+++ b/src/fix_move.cpp
@@ -47,7 +47,9 @@ enum{EQUAL,ATOM};
 /* ---------------------------------------------------------------------- */
 
 FixMove::FixMove(LAMMPS *lmp, int narg, char **arg) :
-  Fix(lmp, narg, arg)
+  Fix(lmp, narg, arg),
+  xvarstr(NULL), yvarstr(NULL), zvarstr(NULL), vxvarstr(NULL), vyvarstr(NULL), vzvarstr(NULL),
+  xoriginal(NULL), toriginal(NULL), qoriginal(NULL), displace(NULL), velocity(NULL)
 {
   if (narg < 4) error->all(FLERR,"Illegal fix move command");
 
@@ -65,9 +67,7 @@ FixMove::FixMove(LAMMPS *lmp, int narg, char **arg) :
   // parse args
 
   int iarg;
-  xvarstr = yvarstr = zvarstr = NULL;
-  vxvarstr = vyvarstr = vzvarstr = NULL;
-
+  
   if (strcmp(arg[3],"linear") == 0) {
     if (narg < 7) error->all(FLERR,"Illegal fix move command");
     iarg = 7;
@@ -255,9 +255,6 @@ FixMove::FixMove(LAMMPS *lmp, int narg, char **arg) :
   // perform initial allocation of atom-based array
   // register with Atom class
 
-  xoriginal = NULL;
-  toriginal = NULL;
-  qoriginal = NULL;
   grow_arrays(atom->nmax);
   atom->add_callback(0);
   atom->add_callback(1);
diff --git a/src/fix_nh.cpp b/src/fix_nh.cpp
index 3ce7c4e302abaf7bf2b36098a65830991dd791d5..e2ce97db43cfed0df5deb2fde1c66b7b4f581ba8 100644
--- a/src/fix_nh.cpp
+++ b/src/fix_nh.cpp
@@ -50,7 +50,11 @@ enum{ISO,ANISO,TRICLINIC};
    NVT,NPH,NPT integrators for improved Nose-Hoover equations of motion
  ---------------------------------------------------------------------- */
 
-FixNH::FixNH(LAMMPS *lmp, int narg, char **arg) : Fix(lmp, narg, arg)
+FixNH::FixNH(LAMMPS *lmp, int narg, char **arg) : Fix(lmp, narg, arg),
+tstat_flag(0), pstat_flag(0),
+rfix(NULL), id_dilate(NULL), irregular(NULL), id_temp(NULL), id_press(NULL),
+tcomputeflag(0), pcomputeflag(0), eta(NULL), eta_dot(NULL), eta_dotdot(NULL),
+eta_mass(NULL), etap(NULL), etap_dot(NULL), etap_dotdot(NULL), etap_mass(NULL), mpchain(0)
 {
   if (narg < 4) error->all(FLERR,"Illegal fix nvt/npt/nph command");