diff --git a/opm/simulators/aquifers/AquiferInterface.hpp b/opm/simulators/aquifers/AquiferInterface.hpp
index ee18165a9..02fcd6a40 100644
--- a/opm/simulators/aquifers/AquiferInterface.hpp
+++ b/opm/simulators/aquifers/AquiferInterface.hpp
@@ -53,6 +53,7 @@ public:
 
     enum { enableTemperature = GET_PROP_VALUE(TypeTag, EnableTemperature) };
     enum { enableEnergy = GET_PROP_VALUE(TypeTag, EnableEnergy) };
+    enum { enableBrine = GET_PROP_VALUE(TypeTag, EnableBrine) };
 
     static const int numEq = BlackoilIndices::numEq;
     typedef double Scalar;
@@ -64,6 +65,7 @@ public:
                                     enableTemperature,
                                     enableEnergy,
                                     BlackoilIndices::gasEnabled,
+                                    enableBrine,
                                     BlackoilIndices::numPhases>
         FluidState;