diff --git a/opm/material/fluidstates/BlackOilFluidState.hpp b/opm/material/fluidstates/BlackOilFluidState.hpp
index 71fe7587ff2..088e5fa0351 100644
--- a/opm/material/fluidstates/BlackOilFluidState.hpp
+++ b/opm/material/fluidstates/BlackOilFluidState.hpp
@@ -706,6 +706,17 @@ class BlackOilFluidState
         }
     }
 
+    /// \brief Return a pointer to the fluid system used by this fluid state.
+    OPM_HOST_DEVICE FluidSystem const* fluidSystemPtr() const
+    {
+        if constexpr (fluidSystemIsStatic) {
+            static FluidSystem instance;
+            return &instance;
+        } else {
+            return fluidSystemPtr_;
+        }
+    }
+
 private:
     OPM_HOST_DEVICE static unsigned storageToCanonicalPhaseIndex_(unsigned storagePhaseIdx, const FluidSystem& fluidSystem)
     {