diff --git a/src/MOLECULE/fix_cmap.cpp b/src/MOLECULE/fix_cmap.cpp
index 26a0ab2542..a763c5d14c 100644
--- a/src/MOLECULE/fix_cmap.cpp
+++ b/src/MOLECULE/fix_cmap.cpp
@@ -1072,10 +1072,10 @@ void FixCMAP::read_data_header(char *line)
    store CMAP interactions as if newton_bond = OFF, even if actually ON
 ------------------------------------------------------------------------- */
 
-void FixCMAP::read_data_section(char *keyword, int n, char *buf,
+void FixCMAP::read_data_section(char * /*keyword*/, int /*n*/, char *buf,
                                  tagint id_offset)
 {
-  int m,tmp,itype;
+  int m,itype;
   tagint atom1,atom2,atom3,atom4,atom5;
 
   auto lines = utils::split_lines(buf);
diff --git a/src/fix_nve_sphere.cpp b/src/fix_nve_sphere.cpp
index 543b94b46b..5cc9167ed5 100644
--- a/src/fix_nve_sphere.cpp
+++ b/src/fix_nve_sphere.cpp
@@ -294,7 +294,6 @@ void FixNVESphere::final_integrate()
   // update v,omega for all particles
   // d_omega/dt = torque / inertia
 
-  double rke = 0.0;
   for (int i = 0; i < nlocal; i++)
     if (mask[i] & groupbit) {
       dtfm = dtf / rmass[i];
@@ -306,8 +305,5 @@ void FixNVESphere::final_integrate()
       omega[i][0] += dtirotate * torque[i][0];
       omega[i][1] += dtirotate * torque[i][1];
       omega[i][2] += dtirotate * torque[i][2];
-      rke += (omega[i][0]*omega[i][0] + omega[i][1]*omega[i][1] +
-              omega[i][2]*omega[i][2])*radius[i]*radius[i]*rmass[i];
     }
-
 }
diff --git a/src/min_linesearch.cpp b/src/min_linesearch.cpp
index c4c10d8a1f..2e7066daed 100644
--- a/src/min_linesearch.cpp
+++ b/src/min_linesearch.cpp
@@ -328,7 +328,7 @@ int MinLineSearch::linemin_quadratic(double eoriginal, double &alpha)
   int i,m,n;
   double fdothall,fdothme,hme,hmax,hmaxall;
   double de_ideal,de;
-  double delfh,engprev,relerr,alphaprev,fhprev,ff,fh,alpha0;
+  double delfh,engprev,relerr,alphaprev,fhprev,fh,alpha0;
   double dot[2],dotall[2];
   double *xatom,*x0atom,*fatom,*hatom;
   double alphamax;
@@ -439,12 +439,8 @@ int MinLineSearch::linemin_quadratic(double eoriginal, double &alpha)
         dotall[1] += fextra[i]*hextra[i];
       }
     }
-    ff = dotall[0];
     fh = dotall[1];
-    if (output->thermo->normflag) {
-      ff /= atom->natoms;
-      fh /= atom->natoms;
-    }
+    if (output->thermo->normflag) fh /= atom->natoms;
 
     delfh = fh - fhprev;