diff --git a/source/source_lcao/module_operator_lcao/ekinetic.cpp b/source/source_lcao/module_operator_lcao/ekinetic.cpp
index 27a0b169bd7..cd7ae91083f 100644
--- a/source/source_lcao/module_operator_lcao/ekinetic.cpp
+++ b/source/source_lcao/module_operator_lcao/ekinetic.cpp
@@ -33,7 +33,7 @@ hamilt::EKinetic<hamilt::OperatorLCAO<TK, TR>>::EKinetic(
 
 // destructor
 template <typename TK, typename TR>
-hamilt::EKinetic<hamilt::OperatorLCAO<TK, TR>>::~EKinetic<hamilt::OperatorLCAO<TK, TR>>()
+hamilt::EKinetic<hamilt::OperatorLCAO<TK, TR>>::~EKinetic()
 {
     if (this->allocated)
     {
diff --git a/source/source_lcao/module_operator_lcao/ekinetic.h b/source/source_lcao/module_operator_lcao/ekinetic.h
index 072e5dfc8b2..1a88de4d9d2 100644
--- a/source/source_lcao/module_operator_lcao/ekinetic.h
+++ b/source/source_lcao/module_operator_lcao/ekinetic.h
@@ -12,9 +12,6 @@
 namespace hamilt
 {
 
-#ifndef __EKINETICTEMPLATE
-#define __EKINETICTEMPLATE
-
 /// The EKinetic class template inherits from class T
 /// it is used to calculate the electronic kinetic
 /// Template parameters:
@@ -25,8 +22,6 @@ class EKinetic : public T
 {
 };
 
-#endif
-
 /// EKinetic class template specialization for OperatorLCAO<TK> base class
 /// It is used to calculate the electronic kinetic matrix in real space and fold it to k-space
 /// HR = <psi_{mu, 0}|-\Nabla^2|psi_{nu, R}>
diff --git a/source/source_pw/module_pwdft/op_pw_ekin.h b/source/source_pw/module_pwdft/op_pw_ekin.h
index adfb67eb7e0..8fc710034c6 100644
--- a/source/source_pw/module_pwdft/op_pw_ekin.h
+++ b/source/source_pw/module_pwdft/op_pw_ekin.h
@@ -8,15 +8,7 @@
 
 namespace hamilt {
 
-// Not needed anymore
-#ifndef __EKINETICTEMPLATE
-#define __EKINETICTEMPLATE
-
 template<class T> class Ekinetic : public T {};
-// template<typename R, typename Device = base_device::DEVICE_CPU>
-// class Ekinetic : public OperatorPW<T, Device> {};
-
-#endif
 
 // template<typename R, typename Device = base_device::DEVICE_CPU>
 // class Ekinetic : public OperatorPW<T, Device>