diff --git a/src/fix_temp_csvr.cpp b/src/fix_temp_csvr.cpp
index 81f87d4caa..3ef99ccd8c 100644
--- a/src/fix_temp_csvr.cpp
+++ b/src/fix_temp_csvr.cpp
@@ -113,7 +113,8 @@ double FixTempCSVR::resamplekin(double ekin_old, double ekin_new){
 /* ---------------------------------------------------------------------- */
 
 FixTempCSVR::FixTempCSVR(LAMMPS *lmp, int narg, char **arg) :
-  Fix(lmp, narg, arg)
+  Fix(lmp, narg, arg),
+  tstr(NULL), id_temp(NULL), random(NULL)
 {
   if (narg != 7) error->all(FLERR,"Illegal fix temp/csvr command");
 
diff --git a/src/fix_temp_rescale.cpp b/src/fix_temp_rescale.cpp
index 5e6036214b..8af39df515 100644
--- a/src/fix_temp_rescale.cpp
+++ b/src/fix_temp_rescale.cpp
@@ -37,7 +37,8 @@ enum{CONSTANT,EQUAL};
 /* ---------------------------------------------------------------------- */
 
 FixTempRescale::FixTempRescale(LAMMPS *lmp, int narg, char **arg) :
-  Fix(lmp, narg, arg)
+  Fix(lmp, narg, arg),
+  tstr(NULL), id_temp(NULL), tflag(0)
 {
   if (narg < 8) error->all(FLERR,"Illegal fix temp/rescale command");
 
diff --git a/src/fix_tmd.cpp b/src/fix_tmd.cpp
index d326685368..a94fbdcad6 100644
--- a/src/fix_tmd.cpp
+++ b/src/fix_tmd.cpp
@@ -39,7 +39,8 @@ using namespace FixConst;
 
 /* ---------------------------------------------------------------------- */
 
-FixTMD::FixTMD(LAMMPS *lmp, int narg, char **arg) : Fix(lmp, narg, arg)
+FixTMD::FixTMD(LAMMPS *lmp, int narg, char **arg) : Fix(lmp, narg, arg),
+nfileevery(0), fp(NULL), xf(NULL), xold(NULL)
 {
   if (narg < 6) error->all(FLERR,"Illegal fix tmd command");
 
@@ -54,8 +55,6 @@ FixTMD::FixTMD(LAMMPS *lmp, int narg, char **arg) : Fix(lmp, narg, arg)
   // perform initial allocation of atom-based arrays
   // register with Atom class
 
-  xf = NULL;
-  xold = NULL;
   grow_arrays(atom->nmax);
   atom->add_callback(0);
 
diff --git a/src/fix_vector.cpp b/src/fix_vector.cpp
index d4bd3087d6..07841d5ba7 100644
--- a/src/fix_vector.cpp
+++ b/src/fix_vector.cpp
@@ -37,7 +37,8 @@ enum{SCALAR,VECTOR};
 /* ---------------------------------------------------------------------- */
 
 FixVector::FixVector(LAMMPS *lmp, int narg, char **arg) :
-  Fix(lmp, narg, arg)
+  Fix(lmp, narg, arg),
+  nvalues(0), which(NULL), argindex(NULL), value2index(NULL), ids(NULL), vector(NULL), array(NULL)
 {
   if (narg < 5) error->all(FLERR,"Illegal fix vector command");
 
@@ -294,8 +295,8 @@ void FixVector::end_of_step()
 
     // evaluate equal-style or vector-style variable
 
-    } else if (which[i] == VARIABLE)
-      if (argindex[i] == 0)
+    } else if (which[i] == VARIABLE) {
+      if (argindex[i] == 0) 
         result[i] = input->variable->compute_equal(m);
       else {
         double *varvec;
@@ -304,6 +305,7 @@ void FixVector::end_of_step()
         if (nvec < index) result[i] = 0.0;
         else result[i] = varvec[index-1];
       }
+    }
   }
 
   // trigger computes on next needed step
diff --git a/src/fix_viscous.cpp b/src/fix_viscous.cpp
index 9c82b34d8d..911fcf84ef 100644
--- a/src/fix_viscous.cpp
+++ b/src/fix_viscous.cpp
@@ -27,7 +27,8 @@ using namespace FixConst;
 /* ---------------------------------------------------------------------- */
 
 FixViscous::FixViscous(LAMMPS *lmp, int narg, char **arg) :
-  Fix(lmp, narg, arg)
+  Fix(lmp, narg, arg),
+  gamma(NULL)
 {
   if (narg < 4) error->all(FLERR,"Illegal fix viscous command");