diff --git a/opm/autodiff/BlackoilModelBase_impl.hpp b/opm/autodiff/BlackoilModelBase_impl.hpp
index 48d2b0887..03003396a 100644
--- a/opm/autodiff/BlackoilModelBase_impl.hpp
+++ b/opm/autodiff/BlackoilModelBase_impl.hpp
@@ -496,7 +496,7 @@ namespace detail {
         // and bhp and Q for the wells
         vars0.reserve(np + 1);
         variableReservoirStateInitials(x, vars0);
-        variableWellStateInitials(xw, vars0);
+        asImpl().variableWellStateInitials(xw, vars0);
         return vars0;
     }
 
@@ -681,7 +681,7 @@ namespace detail {
             }
         }
         // wells
-        variableStateExtractWellsVars(indices, vars, state);
+        asImpl().variableStateExtractWellsVars(indices, vars, state);
         return state;
     }
 
diff --git a/opm/autodiff/BlackoilMultiSegmentModel.hpp b/opm/autodiff/BlackoilMultiSegmentModel.hpp
index ce4e334a5..f395a2a8e 100644
--- a/opm/autodiff/BlackoilMultiSegmentModel.hpp
+++ b/opm/autodiff/BlackoilMultiSegmentModel.hpp
@@ -60,6 +60,8 @@ namespace Opm {
         typedef typename Base::WellState WellState;
         typedef BlackoilMultiSegmentSolutionState SolutionState;
 
+        friend Base;
+
         // ---------  Public methods  ---------
 
         /// Construct the model. It will retain references to the