diff --git a/ProcessLib/HydroMechanics/HydroMechanicsFEM.h b/ProcessLib/HydroMechanics/HydroMechanicsFEM.h
index 3431216d2447dc4eeed67c664ae7c25e7c9c535f..5ac173925f9bc31aea995e55cefcb07116934753 100644
--- a/ProcessLib/HydroMechanics/HydroMechanicsFEM.h
+++ b/ProcessLib/HydroMechanics/HydroMechanicsFEM.h
@@ -155,9 +155,18 @@ public:
         std::vector<double>& local_b_data, std::vector<double>& local_Jac_data,
         LocalCoupledSolutions const& local_coupled_solutions) override;
 
-    void preTimestepConcrete(std::vector<double> const& /*local_x*/,
-                             double const /*t*/,
-                             double const /*delta_t*/) override
+    void initializeConcrete() override
+    {
+        unsigned const n_integration_points =
+            _integration_method.getNumberOfPoints();
+
+        for (unsigned ip = 0; ip < n_integration_points; ip++)
+        {
+            _ip_data[ip].pushBackState();
+        }
+    }
+
+    void postTimestepConcrete(std::vector<double> const& /*local_x*/) override
     {
         unsigned const n_integration_points =
             _integration_method.getNumberOfPoints();
diff --git a/ProcessLib/HydroMechanics/HydroMechanicsProcess.cpp b/ProcessLib/HydroMechanics/HydroMechanicsProcess.cpp
index 0ceeb1c0237fc9da145b5a06f1efc6dd5b435fc5..3a1bcd5fd4ebd6b939fbe6a9cf2ae808848fb92b 100644
--- a/ProcessLib/HydroMechanics/HydroMechanicsProcess.cpp
+++ b/ProcessLib/HydroMechanics/HydroMechanicsProcess.cpp
@@ -245,6 +245,14 @@ void HydroMechanicsProcess<DisplacementDim>::initializeConcreteProcess(
         MeshLib::getOrCreateMeshProperty<double>(
             const_cast<MeshLib::Mesh&>(mesh), "pressure_interpolated",
             MeshLib::MeshItemType::Node, 1);
+
+    // Initialize local assemblers after all variables have been set.
+    const int process_id = 0;
+    ProcessLib::ProcessVariable const& pv = getProcessVariables(process_id)[0];
+
+    GlobalExecutor::executeSelectedMemberOnDereferenced(
+        &LocalAssemblerInterface::initialize, _local_assemblers,
+        pv.getActiveElementIDs(), *_local_to_global_index_map);
 }
 
 template <int DisplacementDim>