diff --git a/src/VORONOI/compute_voronoi_atom.cpp b/src/VORONOI/compute_voronoi_atom.cpp
index bf58cdd34722da7710f11116449c7590eba3cd7c..5e49b72c6613eb222fded5fa30697d6d1fc9c64f 100644
--- a/src/VORONOI/compute_voronoi_atom.cpp
+++ b/src/VORONOI/compute_voronoi_atom.cpp
@@ -42,7 +42,10 @@ using namespace voro;
 /* ---------------------------------------------------------------------- */
 
 ComputeVoronoi::ComputeVoronoi(LAMMPS *lmp, int narg, char **arg) :
-  Compute(lmp, narg, arg)
+  Compute(lmp, narg, arg), con_mono(NULL), con_poly(NULL), 
+  radstr(NULL), voro(NULL), edge(NULL), sendvector(NULL), 
+  rfield(NULL), tags(NULL), occvec(NULL), sendocc(NULL), 
+  lroot(NULL), lnext(NULL), faces(NULL)
 {
   int sgroup;