diff --git a/src/CORESHELL/compute_temp_cs.cpp b/src/CORESHELL/compute_temp_cs.cpp
index d0ff5d290d..d2345684dc 100644
--- a/src/CORESHELL/compute_temp_cs.cpp
+++ b/src/CORESHELL/compute_temp_cs.cpp
@@ -39,7 +39,7 @@ using namespace LAMMPS_NS;
 /* ---------------------------------------------------------------------- */
 
 ComputeTempCS::ComputeTempCS(LAMMPS *lmp, int narg, char **arg) :
-  Compute(lmp, narg, arg)
+  Compute(lmp, narg, arg), vint(NULL), id_fix(NULL), fix(NULL)
 {
   if (narg != 5) error->all(FLERR,"Illegal compute temp/cs command");