diff --git a/examples/polymer_reorder.cpp b/examples/polymer_reorder.cpp
index 23c927fef..03793ccf9 100644
--- a/examples/polymer_reorder.cpp
+++ b/examples/polymer_reorder.cpp
@@ -557,7 +557,7 @@ main(int argc, char** argv)
         THROW("Unknown method: " << method_string);
     }
 
-    Opm::TransportModelPolymer reorder_model(*grid->c_grid(), props->porosity(), &porevol[0], *props, polyprop,
+    Opm::TransportModelPolymer reorder_model(*grid->c_grid(), *props, polyprop,
                                              method, nl_tolerance, nl_maxiter);
 
     if (use_gauss_seidel_gravity) {
diff --git a/opm/polymer/TransportModelPolymer.cpp b/opm/polymer/TransportModelPolymer.cpp
index ced8a1ee2..37da58de8 100644
--- a/opm/polymer/TransportModelPolymer.cpp
+++ b/opm/polymer/TransportModelPolymer.cpp
@@ -172,16 +172,14 @@ namespace
 namespace Opm
 {
     TransportModelPolymer::TransportModelPolymer(const UnstructuredGrid& grid,
-						 const double* porosity,
-						 const double* porevolume,
 						 const IncompPropertiesInterface& props,
 						 const PolymerProperties& polyprops,
 						 const SingleCellMethod method,
 						 const double tol,
 						 const int maxit)
 	: grid_(grid),
-	  porosity_(porosity),
-	  porevolume_(porevolume),
+	  porosity_(props.porosity()),
+	  porevolume_(NULL),
 	  props_(props),
 	  polyprops_(polyprops),
 	  tol_(tol),
diff --git a/opm/polymer/TransportModelPolymer.hpp b/opm/polymer/TransportModelPolymer.hpp
index 4386c4413..0f1017787 100644
--- a/opm/polymer/TransportModelPolymer.hpp
+++ b/opm/polymer/TransportModelPolymer.hpp
@@ -44,8 +44,6 @@ namespace Opm
 
 	/// \TODO document me, especially method.
 	TransportModelPolymer(const UnstructuredGrid& grid,
-			      const double* porosity,
-			      const double* porevolume,
 			      const IncompPropertiesInterface& props,
 			      const PolymerProperties& polyprops,
 			      const SingleCellMethod method,