diff --git a/src/tensor/RankZeroOperator.cpp b/src/tensor/RankZeroOperator.cpp
index a824204ec..fa23dfef1 100644
--- a/src/tensor/RankZeroOperator.cpp
+++ b/src/tensor/RankZeroOperator.cpp
@@ -241,7 +241,7 @@ ComplexDouble RankZeroOperator::dagger(const mrcpp::Coord<3> &r) const {
  * is added upp with the corresponding coefficient.
  */
 Orbital RankZeroOperator::operator()(Orbital inp) {
-    if (not mrcpp::mpi::my_orb(inp)) return inp.paramCopy();
+    if (inp.getNNodes(NUMBER::Total) == 0) return inp.paramCopy();
 
     RankZeroOperator &O = *this;
     std::vector<mrcpp::ComplexFunction> func_vec;
@@ -262,7 +262,7 @@ Orbital RankZeroOperator::operator()(Orbital inp) {
  * NOT IMPLEMENTED
  */
 Orbital RankZeroOperator::dagger(Orbital inp) {
-    if (not mrcpp::mpi::my_orb(inp)) return inp.paramCopy();
+    if (inp.getNNodes(NUMBER::Total) == 0) return inp.paramCopy();
 
     RankZeroOperator &O = *this;
     std::vector<mrcpp::ComplexFunction> func_vec;
@@ -470,7 +470,7 @@ ComplexDouble RankZeroOperator::trace(const Nuclei &nucs) {
  */
 Orbital RankZeroOperator::applyOperTerm(int n, Orbital inp) {
     if (n >= this->oper_exp.size()) MSG_ABORT("Invalid oper term");
-    if (not mrcpp::mpi::my_orb(inp)) return inp.paramCopy();
+    if (inp.getNNodes(NUMBER::Total) == 0) return inp.paramCopy();
 
     Orbital out = inp;
     for (auto O_nm : this->oper_exp[n]) {
@@ -482,7 +482,7 @@ Orbital RankZeroOperator::applyOperTerm(int n, Orbital inp) {
 
 Orbital RankZeroOperator::daggerOperTerm(int n, Orbital inp) {
     if (n >= this->oper_exp.size()) MSG_ABORT("Invalid oper term");
-    if (not mrcpp::mpi::my_orb(inp)) return inp.paramCopy();
+    if (inp.getNNodes(NUMBER::Total) == 0) return inp.paramCopy();
 
     Orbital out = inp;
     for (int i = this->oper_exp[n].size() - 1; i >= 0; i--) {