diff --git a/src/USER-DPD/fix_dpd_energy.h b/src/USER-DPD/fix_dpd_energy.h
index d9101185b4c48d15bd2955bacf91dbcb38e8014d..9be41c3b9a4e93fa61b8a195dc43bc6c0ddfffab 100644
--- a/src/USER-DPD/fix_dpd_energy.h
+++ b/src/USER-DPD/fix_dpd_energy.h
@@ -33,10 +33,6 @@ class FixDPDenergy : public Fix {
   virtual void final_integrate();
 
  protected:
-  double dtv,dtf;
-  int mass_require;
-  int eos;
-
   class PairDPDfdtEnergy *pairDPDE;
 };