diff --git a/src/compute_pressure.h b/src/compute_pressure.h
index 3259377bd8..31983e8e2c 100644
--- a/src/compute_pressure.h
+++ b/src/compute_pressure.h
@@ -42,10 +42,15 @@ class ComputePressure : public Compute {
   char *id_temp;
   double virial[6];
   int hybridpairflag;
+  class Pair *hybridpair;
   int keflag,pairflag,bondflag,angleflag,dihedralflag,improperflag;
   int fixflag,kspaceflag;
 
   void virial_compute(int, int);
+
+ private:
+  int nsub;
+  char *pstyle;
 };
 
 }