diff --git a/src/USER-MISC/compute_temp_rotate.cpp b/src/USER-MISC/compute_temp_rotate.cpp
index af5da2ee08..4c0d56d11f 100644
--- a/src/USER-MISC/compute_temp_rotate.cpp
+++ b/src/USER-MISC/compute_temp_rotate.cpp
@@ -62,13 +62,18 @@ ComputeTempRotate::~ComputeTempRotate()
 /* ---------------------------------------------------------------------- */
 
 void ComputeTempRotate::init()
+{
+  masstotal = group->mass(igroup);
+}
+
+/* ---------------------------------------------------------------------- */
+
+void ComputeTempRotate::setup()
 {
   fix_dof = 0;
   for (int i = 0; i < modify->nfix; i++)
     fix_dof += modify->fix[i]->dof(igroup);
   dof_compute();
-
-  masstotal = group->mass(igroup);
 }
 
 /* ---------------------------------------------------------------------- */
diff --git a/src/USER-MISC/compute_temp_rotate.h b/src/USER-MISC/compute_temp_rotate.h
index 8944f986be..6dd43e356b 100644
--- a/src/USER-MISC/compute_temp_rotate.h
+++ b/src/USER-MISC/compute_temp_rotate.h
@@ -29,6 +29,7 @@ class ComputeTempRotate : public Compute {
   ComputeTempRotate(class LAMMPS *, int, char **);
   ~ComputeTempRotate();
   void init();
+  void setup();
   double compute_scalar();
   void compute_vector();