diff --git a/src/ELECTRODE/fix_electrode_conp.cpp b/src/ELECTRODE/fix_electrode_conp.cpp
index 3bf5d6dabd..5c3b7010dc 100644
--- a/src/ELECTRODE/fix_electrode_conp.cpp
+++ b/src/ELECTRODE/fix_electrode_conp.cpp
@@ -62,9 +62,11 @@ enum {
 
 //     0        1      2              3    4
 // fix fxupdate group1 electrode/conp pot1 eta couple group2 pot2
-FixElectrodeConp::FixElectrodeConp(LAMMPS *lmp, int narg, char **arg) : Fix(lmp, narg, arg)
+FixElectrodeConp::FixElectrodeConp(LAMMPS *lmp, int narg, char **arg) :
+    Fix(lmp, narg, arg), f_inv(nullptr), f_mat(nullptr), f_vec(nullptr), array_compute(nullptr),
+    ele_vector(nullptr), capacitance(nullptr), pair(nullptr), mat_neighlist(nullptr),
+    vec_neighlist(nullptr)
 {
-  f_inv = f_mat = f_vec = nullptr;
   read_inv = read_mat = false;
   symm = false;
   ffield = false;
diff --git a/src/ELECTRODE/fix_electrode_conp.h b/src/ELECTRODE/fix_electrode_conp.h
index 833d842ace..e116bee4b3 100644
--- a/src/ELECTRODE/fix_electrode_conp.h
+++ b/src/ELECTRODE/fix_electrode_conp.h
@@ -74,7 +74,7 @@ class FixElectrodeConp : public Fix {
   ElectrodeAccelInterface *accel_interface;    // used by /intel
 
  private:
-  FILE *f_inv, *f_vec, *f_mat;    // files for capacitance, eleastance and vector
+  FILE *f_inv, *f_mat, *f_vec;    // files for capacitance, eleastance and vector
   std::string input_file_inv, input_file_mat;
   class ElectrodeMatrix *array_compute;
   class ElectrodeVector *ele_vector;