diff --git a/opm/polymer/fullyimplicit/SimulatorFullyImplicitBlackoilPolymer_impl.hpp b/opm/polymer/fullyimplicit/SimulatorFullyImplicitBlackoilPolymer_impl.hpp
index cd275cd3f..7a745ef41 100644
--- a/opm/polymer/fullyimplicit/SimulatorFullyImplicitBlackoilPolymer_impl.hpp
+++ b/opm/polymer/fullyimplicit/SimulatorFullyImplicitBlackoilPolymer_impl.hpp
@@ -328,12 +328,7 @@ namespace Opm
                                        props_.permeability());
             const Wells* wells = wells_manager.c_wells();
             WellStateFullyImplicitBlackoil well_state;
-            well_state.init(wells, state.blackoilState());
-            if (timer.currentStepNum() != 0) {
-                // Transfer previous well state to current.
-                well_state.partialCopy(prev_well_state, *wells, prev_well_state.numWells());
-            }
-                
+            well_state.init(wells, state.blackoilState(), prev_well_state);
             // compute polymer inflow
             std::unique_ptr<PolymerInflowInterface> polymer_inflow_ptr;
             if (deck_->hasKeyword("WPOLYMER")) {
diff --git a/opm/polymer/fullyimplicit/SimulatorFullyImplicitCompressiblePolymer.cpp b/opm/polymer/fullyimplicit/SimulatorFullyImplicitCompressiblePolymer.cpp
index edb555ae2..f4d35ed51 100644
--- a/opm/polymer/fullyimplicit/SimulatorFullyImplicitCompressiblePolymer.cpp
+++ b/opm/polymer/fullyimplicit/SimulatorFullyImplicitCompressiblePolymer.cpp
@@ -278,11 +278,7 @@ namespace Opm
                                        props_.permeability());
             const Wells* wells = wells_manager.c_wells();
             WellStateFullyImplicitBlackoil well_state;
-            well_state.init(wells, state.blackoilState());
-            if (timer.currentStepNum() != 0) {
-                // Transfer previous well state to current.
-                well_state.partialCopy(prev_well_state, *wells, prev_well_state.numWells());
-            }
+            well_state.init(wells, state.blackoilState(), prev_well_state);
             //Compute polymer inflow.
             std::unique_ptr<PolymerInflowInterface> polymer_inflow_ptr;
             if (deck_->hasKeyword("WPOLYMER")) {