diff --git a/opm/simulators/utils/ParallelRestart.cpp b/opm/simulators/utils/ParallelRestart.cpp
index f5d02b551..73577d978 100644
--- a/opm/simulators/utils/ParallelRestart.cpp
+++ b/opm/simulators/utils/ParallelRestart.cpp
@@ -41,7 +41,6 @@
 #include <opm/parser/eclipse/EclipseState/Schedule/TimeMap.hpp>
 #include <opm/parser/eclipse/EclipseState/Schedule/Tuning.hpp>
 #include <opm/parser/eclipse/EclipseState/Schedule/UDQ/UDQConfig.hpp>
-#include <opm/parser/eclipse/EclipseState/Schedule/UDQ/UDQDefine.hpp>
 #include <opm/parser/eclipse/EclipseState/Schedule/UDQ/UDQFunction.hpp>
 #include <opm/parser/eclipse/EclipseState/Schedule/UDQ/UDQInput.hpp>
 #include <opm/parser/eclipse/EclipseState/Schedule/UDQ/UDQFunctionTable.hpp>
@@ -1102,15 +1101,6 @@ std::size_t packSize(const WListManager& data,
     return packSize(data.lists(), comm);
 }
 
-std::size_t packSize(const UDQDefine& data,
-                     Dune::MPIHelper::MPICommunicator comm)
-{
-    return packSize(data.keyword(), comm) +
-           packSize(data.getAst(), comm) +
-           packSize(data.var_type(), comm) +
-           packSize(data.input_string(), comm);
-}
-
 std::size_t packSize(const UDQIndex& data,
                      Dune::MPIHelper::MPICommunicator comm)
 {
@@ -2397,16 +2387,6 @@ void pack(const WListManager& data,
     pack(data.lists(), buffer, position, comm);
 }
 
-void pack(const UDQDefine& data,
-          std::vector<char>& buffer, int& position,
-          Dune::MPIHelper::MPICommunicator comm)
-{
-    pack(data.keyword(), buffer, position, comm);
-    pack(data.getAst(), buffer, position, comm);
-    pack(data.var_type(), buffer, position, comm);
-    pack(data.input_string(), buffer, position, comm);
-}
-
 void pack(const UDQIndex& data,
           std::vector<char>& buffer, int& position,
           Dune::MPIHelper::MPICommunicator comm)
@@ -4155,22 +4135,6 @@ void unpack(WListManager& data,
     data = WListManager(lists);
 }
 
-void unpack(UDQDefine& data,
-            std::vector<char>& buffer, int& position,
-            Dune::MPIHelper::MPICommunicator comm)
-{
-    std::string keyword;
-    std::shared_ptr<UDQASTNode> ast;
-    UDQVarType varType;
-    std::string string_data;
-
-    unpack(keyword, buffer, position, comm);
-    unpack(ast, buffer, position, comm);
-    unpack(varType, buffer, position, comm);
-    unpack(string_data, buffer, position, comm);
-    data = UDQDefine(keyword, ast, varType, string_data);
-}
-
 void unpack(UDQIndex& 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 ff0402a89..944d7d2bd 100644
--- a/opm/simulators/utils/ParallelRestart.hpp
+++ b/opm/simulators/utils/ParallelRestart.hpp
@@ -124,7 +124,6 @@ class TlmixparTable;
 class Tuning;
 class UDAValue;
 class UDQConfig;
-class UDQDefine;
 class UDQIndex;
 class UDQParams;
 class UnitSystem;
@@ -563,7 +562,6 @@ ADD_PACK_PROTOTYPES(TlmixparTable)
 ADD_PACK_PROTOTYPES(Tuning)
 ADD_PACK_PROTOTYPES(UDAValue)
 ADD_PACK_PROTOTYPES(UDQConfig)
-ADD_PACK_PROTOTYPES(UDQDefine)
 ADD_PACK_PROTOTYPES(UDQIndex)
 ADD_PACK_PROTOTYPES(UDQParams)
 ADD_PACK_PROTOTYPES(UnitSystem)
diff --git a/tests/test_ParallelRestart.cpp b/tests/test_ParallelRestart.cpp
index e12c7acc4..a0c565f7a 100644
--- a/tests/test_ParallelRestart.cpp
+++ b/tests/test_ParallelRestart.cpp
@@ -1685,7 +1685,7 @@ BOOST_AUTO_TEST_CASE(UDQDefine)
                        "test", 1.0, {"test1", "test2"}, n0, n0);
     Opm::UDQDefine val1("test", std::make_shared<Opm::UDQASTNode>(n1),
                         Opm::UDQVarType::NONE, "test2");
-    auto val2 = PackUnpack(val1);
+    auto val2 = PackUnpack2(val1);
     DO_CHECKS(UDQDefine)
 #endif
 }