diff --git a/src/COLLOID/fix_wall_colloid.cpp b/src/COLLOID/fix_wall_colloid.cpp
index 0c03ad57a7..7627fca708 100644
--- a/src/COLLOID/fix_wall_colloid.cpp
+++ b/src/COLLOID/fix_wall_colloid.cpp
@@ -76,7 +76,7 @@ void FixWallColloid::precompute(int m)
 void FixWallColloid::wall_particle(int m, int which, double coord)
 {
   double delta,delta2,rinv,r2inv,r4inv,r8inv,fwall;
-  double r2,rinv2,r2inv2,r4inv2,r6inv2;
+  double r2,rinv2,r2inv2,r4inv2;
   double r3,rinv3,r2inv3,r4inv3,r6inv3;
   double rad,rad2,rad4,rad8,diam,new_coeff2;
   double eoffset;
@@ -124,7 +124,6 @@ void FixWallColloid::wall_particle(int m, int which, double coord)
       rinv2 = 1.0/r2;
       r2inv2 = rinv2*rinv2;
       r4inv2 = r2inv2*r2inv2;
-      r6inv2 = r4inv2*r2inv2;
       r3 = delta + rad;
       rinv3 = 1.0/r3;
       r2inv3 = rinv3*rinv3;
@@ -141,7 +140,6 @@ void FixWallColloid::wall_particle(int m, int which, double coord)
       rinv2 = 1.0/r2;
       r2inv2 = rinv2*rinv2;
       r4inv2 = r2inv2*r2inv2;
-      r6inv2 = r4inv2*r2inv2;
       r3 = cutoff[m] + rad;
       rinv3 = 1.0/r3;
       r2inv3 = rinv3*rinv3;
diff --git a/src/compute_property_local.cpp b/src/compute_property_local.cpp
index 5aa7652468..a0e615bc41 100644
--- a/src/compute_property_local.cpp
+++ b/src/compute_property_local.cpp
@@ -280,8 +280,7 @@ void ComputePropertyLocal::compute_local()
 int ComputePropertyLocal::count_pairs(int allflag, int forceflag)
 {
   int i,j,m,n,ii,jj,inum,jnum,itype,jtype;
-  double xtmp,ytmp,ztmp,delx,dely,delz;
-  double rsq,factor_coul,factor_lj;
+  double xtmp,ytmp,ztmp,delx,dely,delz,rsq;
   int *ilist,*jlist,*numneigh,**firstneigh;
 
   double **x = atom->x;
@@ -321,8 +320,6 @@ int ComputePropertyLocal::count_pairs(int allflag, int forceflag)
 
     for (jj = 0; jj < jnum; jj++) {
       j = jlist[jj];
-      factor_lj = special_lj[sbmask(j)];
-      factor_coul = special_coul[sbmask(j)];
       j &= NEIGHMASK;
 
       if (!(mask[j] & groupbit)) continue;
diff --git a/src/memory.cpp b/src/memory.cpp
index 541a7101df..6af16e68e0 100644
--- a/src/memory.cpp
+++ b/src/memory.cpp
@@ -12,7 +12,6 @@
 ------------------------------------------------------------------------- */
 
 #include "lmptype.h"
-#include "mpi.h"
 #include "stdio.h"
 #include "stdlib.h"
 #include "string.h"