diff --git a/opm/models/blackoil/blackoilonephaseindices.hh b/opm/models/blackoil/blackoilonephaseindices.hh
index 531c501ff..58c2754a4 100644
--- a/opm/models/blackoil/blackoilonephaseindices.hh
+++ b/opm/models/blackoil/blackoilonephaseindices.hh
@@ -37,7 +37,7 @@ namespace Opm {
  *
  * \brief The primary variable and equation indices for the black-oil model.
  */
-template <unsigned numSolventsV, unsigned numPolymersV, unsigned numEnergyV, bool enableFoam, unsigned PVOffset, unsigned canonicalCompIdx>
+template <unsigned numSolventsV, unsigned numPolymersV, unsigned numEnergyV, bool enableFoam, bool enableBrine, unsigned PVOffset, unsigned canonicalCompIdx>
 struct BlackOilOnePhaseIndices
 {
     //! Is phase enabled or not
@@ -66,11 +66,14 @@ struct BlackOilOnePhaseIndices
     //! Number of foam equations to be considered
     static const int numFoam = enableFoam? 1 : 0;
 
+    //! Number of salt equations to be considered
+    static const int numBrine = enableBrine? 1 : 0;
+
     //! The number of fluid phases
     static const int numPhases = 1;
 
     //! The number of equations
-    static const int numEq = numPhases + numSolvents + numPolymers + numEnergy + numFoam;
+    static const int numEq = numPhases + numSolvents + numPolymers + numEnergy + numFoam + numBrine;
 
     //////////////////////////////
     // Primary variable indices
@@ -106,9 +109,13 @@ struct BlackOilOnePhaseIndices
     static const int foamConcentrationIdx =
         enableFoam ? PVOffset + numPhases + numSolvents + numPolymers : -1000;
 
+    //! Index of the primary variable for the salt
+    static const int saltConcentrationIdx =
+        enableBrine ? PVOffset + numPhases + numSolvents + numPolymers + numFoam : -1000;
+
     //! Index of the primary variable for temperature
     static const int temperatureIdx  =
-        enableEnergy ? PVOffset + numPhases + numSolvents + numPolymers + numFoam: - 1000;
+        enableEnergy ? PVOffset + numPhases + numSolvents + numPolymers + numFoam + numBrine: - 1000;
 
     //////////////////////
     // Equation indices
@@ -153,9 +160,13 @@ struct BlackOilOnePhaseIndices
     static const int contiFoamEqIdx =
         enableFoam ? PVOffset + numPhases + numSolvents + numPolymers : -1000;
 
+    //! Index of the continuity equation for the salt component
+    static const int contiBrineEqIdx =
+        enableBrine ? PVOffset + numPhases + numSolvents + numPolymers + numFoam : -1000;
+
     //! Index of the continuity equation for energy
     static const int contiEnergyEqIdx =
-        enableEnergy ? PVOffset + numPhases + numSolvents + numPolymers + numFoam : -1000;
+        enableEnergy ? PVOffset + numPhases + numSolvents + numPolymers + numFoam + numBrine: -1000;
 };
 
 } // namespace Opm