diff --git a/opm/simulators/utils/ParallelRestart.cpp b/opm/simulators/utils/ParallelRestart.cpp
index ba298ef1d..8f6b1175e 100644
--- a/opm/simulators/utils/ParallelRestart.cpp
+++ b/opm/simulators/utils/ParallelRestart.cpp
@@ -1653,12 +1653,6 @@ std::size_t packSize(const SolventDensityTable& data,
     return packSize(data.getSolventDensityColumn(), comm);
 }
 
-std::size_t packSize(const GridDims& data,
-                     Dune::MPIHelper::MPICommunicator comm)
-{
-    return packSize(data.getNXYZ(), comm);
-}
-
 std::size_t packSize(const ShrateTable& data, Dune::MPIHelper::MPICommunicator comm)
 {
     return packSize(static_cast<const std::vector<ShrateRecord>&>(data), comm);
@@ -3256,13 +3250,6 @@ void pack(const SolventDensityTable& data,
     pack(data.getSolventDensityColumn(), buffer, position, comm);
 }
 
-void pack(const GridDims& data,
-          std::vector<char>& buffer, int& position,
-          Dune::MPIHelper::MPICommunicator comm)
-{
-    pack(data.getNXYZ(), buffer, position, comm);
-}
-
 void pack(const ShrateTable& data, std::vector<char>& buffer, int& position,
           Dune::MPIHelper::MPICommunicator comm)
 {
@@ -5531,16 +5518,6 @@ void unpack(SolventDensityTable& data, std::vector<char>& buffer, int& position,
     data = SolventDensityTable(tableValues);
 }
 
-void unpack(GridDims& data,
-            std::vector<char>& buffer, int& position,
-            Dune::MPIHelper::MPICommunicator comm)
-{
-    std::array<int,3> NXYZ;
-
-    unpack(NXYZ, buffer, position, comm);
-    data = GridDims(NXYZ);
-}
-
 void unpack(ShrateTable& data, std::vector<char>& buffer, int& position,
             Dune::MPIHelper::MPICommunicator comm)
 {
diff --git a/opm/simulators/utils/ParallelRestart.hpp b/opm/simulators/utils/ParallelRestart.hpp
index b7499a76d..ced9681b8 100644
--- a/opm/simulators/utils/ParallelRestart.hpp
+++ b/opm/simulators/utils/ParallelRestart.hpp
@@ -89,7 +89,6 @@ class FaultCollection;
 class FaultFace;
 class FoamConfig;
 class FoamData;
-class GridDims;
 class InitConfig;
 class IOConfig;
 template<class T> class IOrderSet;
@@ -545,7 +544,6 @@ ADD_PACK_PROTOTYPES(GConSale)
 ADD_PACK_PROTOTYPES(GConSale::GCONSALEGroup)
 ADD_PACK_PROTOTYPES(GConSump)
 ADD_PACK_PROTOTYPES(GConSump::GCONSUMPGroup)
-ADD_PACK_PROTOTYPES(GridDims)
 ADD_PACK_PROTOTYPES(GuideRateConfig)
 ADD_PACK_PROTOTYPES(GuideRateConfig::GroupTarget)
 ADD_PACK_PROTOTYPES(GuideRateConfig::WellTarget)
diff --git a/tests/test_ParallelRestart.cpp b/tests/test_ParallelRestart.cpp
index d7b8a8780..a9e3de40b 100644
--- a/tests/test_ParallelRestart.cpp
+++ b/tests/test_ParallelRestart.cpp
@@ -2360,7 +2360,7 @@ BOOST_AUTO_TEST_CASE(GridDims)
 {
 #ifdef HAVE_MPI
     Opm::GridDims val1{ 1,  2,  3};
-    auto val2 = PackUnpack(val1);
+    auto val2 = PackUnpack2(val1);
     DO_CHECKS(GridDims)
 #endif
 }