diff --git a/ebos/eclbasevanguard.hh b/ebos/eclbasevanguard.hh
index 30a3c1aa8..60a9e4716 100644
--- a/ebos/eclbasevanguard.hh
+++ b/ebos/eclbasevanguard.hh
@@ -84,10 +84,14 @@ template<class TypeTag, class MyTypeTag>
 struct EdgeWeightsMethod {
     using type = UndefinedProperty;
 };
+
+#if HAVE_OPENCL
 template<class TypeTag, class MyTypeTag>
 struct NumJacobiBlocks {
     using type = UndefinedProperty;
 };
+#endif  // HAVE_OPENCL
+
 template<class TypeTag, class MyTypeTag>
 struct OwnerCellsFirst {
     using type = UndefinedProperty;
@@ -136,10 +140,14 @@ template<class TypeTag>
 struct EdgeWeightsMethod<TypeTag, TTag::EclBaseVanguard> {
     static constexpr int value = 1;
 };
+
+#if HAVE_OPENCL
 template<class TypeTag>
 struct NumJacobiBlocks<TypeTag, TTag::EclBaseVanguard> {
     static constexpr int value = 0;
 };
+#endif // HAVE_OPENCL
+
 template<class TypeTag>
 struct OwnerCellsFirst<TypeTag, TTag::EclBaseVanguard> {
     static constexpr bool value = true;
@@ -219,8 +227,12 @@ public:
                              "When restarting: should we try to initialize wells and groups from historical SCHEDULE section.");
         EWOMS_REGISTER_PARAM(TypeTag, int, EdgeWeightsMethod,
                              "Choose edge-weighing strategy: 0=uniform, 1=trans, 2=log(trans).");
+
+#if HAVE_OPENCL
         EWOMS_REGISTER_PARAM(TypeTag, int, NumJacobiBlocks,
                              "Number of blocks to be created for the Block-Jacobi preconditioner.");
+#endif
+
         EWOMS_REGISTER_PARAM(TypeTag, bool, OwnerCellsFirst,
                              "Order cells owned by rank before ghost/overlap cells.");
         EWOMS_REGISTER_PARAM(TypeTag, bool, SerialPartitioning,
@@ -245,7 +257,11 @@ public:
     {
         fileName_ = EWOMS_GET_PARAM(TypeTag, std::string, EclDeckFileName);
         edgeWeightsMethod_   = Dune::EdgeWeightMethod(EWOMS_GET_PARAM(TypeTag, int, EdgeWeightsMethod));
+
+#if HAVE_OPENCL
         numJacobiBlocks_ = EWOMS_GET_PARAM(TypeTag, int, NumJacobiBlocks);
+#endif
+
         ownersFirst_ = EWOMS_GET_PARAM(TypeTag, bool, OwnerCellsFirst);
         serialPartitioning_ = EWOMS_GET_PARAM(TypeTag, bool, SerialPartitioning);
         zoltanImbalanceTol_ = EWOMS_GET_PARAM(TypeTag, double, ZoltanImbalanceTol);
diff --git a/ebos/eclgenericcpgridvanguard.cc b/ebos/eclgenericcpgridvanguard.cc
index 95f51b4c2..e70c2af2b 100644
--- a/ebos/eclgenericcpgridvanguard.cc
+++ b/ebos/eclgenericcpgridvanguard.cc
@@ -144,12 +144,14 @@ doLoadBalance_(const Dune::EdgeWeightMethod            edgeWeightsMethod,
         // first cell of a well (e.g. for pressure).  Hence this is now
         // skipped.  Rank 0 had everything even before.
 
+#if HAVE_OPENCL
         if (partitionJacobiBlocks) {
             this->cell_part_ = this->grid_->
                 zoltanPartitionWithoutScatter(&wells, faceTrans.data(),
                                               numJacobiBlocks,
                                               zoltanImbalanceTol);
         }
+#endif // HAVE_OPENCL
     }
 }
 
diff --git a/ebos/eclgenericvanguard.hh b/ebos/eclgenericvanguard.hh
index 200ecb508..fb727a4c1 100644
--- a/ebos/eclgenericvanguard.hh
+++ b/ebos/eclgenericvanguard.hh
@@ -253,7 +253,13 @@ public:
      * \brief Number of blocks in the Block-Jacobi preconditioner.
      */
     int numJacobiBlocks() const
-    { return numJacobiBlocks_; }
+    {
+#if HAVE_OPENCL
+        return numJacobiBlocks_;
+#else
+        return 0;
+#endif
+    }
 
     /*!
      * \brief Parameter that decide if cells owned by rank are ordered before ghost cells.
@@ -329,7 +335,11 @@ protected:
     std::string caseName_;
     std::string fileName_;
     Dune::EdgeWeightMethod edgeWeightsMethod_;
-    int numJacobiBlocks_;
+
+#if HAVE_OPENCL
+    int numJacobiBlocks_{0};
+#endif  // HAVE_OPENCL
+
     bool ownersFirst_;
     bool serialPartitioning_;
     double zoltanImbalanceTol_;
diff --git a/opm/simulators/linalg/ISTLSolverEbos.hpp b/opm/simulators/linalg/ISTLSolverEbos.hpp
index 890fcc4ae..33edb89ad 100644
--- a/opm/simulators/linalg/ISTLSolverEbos.hpp
+++ b/opm/simulators/linalg/ISTLSolverEbos.hpp
@@ -213,7 +213,12 @@ namespace Opm
                 matrix_ = const_cast<Matrix*>(&M.istlMatrix());
 
                 // setup sparsity pattern for jacobi matrix for preconditioner (only used for openclSolver)
-                numJacobiBlocks_ = EWOMS_GET_PARAM(TypeTag, int, NumJacobiBlocks);
+#if HAVE_OPENCL
+                this->numJacobiBlocks_ = EWOMS_GET_PARAM(TypeTag, int, NumJacobiBlocks);
+#else
+                this->numJacobiBlocks_ = 0;
+#endif
+
                 useWellConn_ = EWOMS_GET_PARAM(TypeTag, bool, MatrixAddWellContributions);
                 if (numJacobiBlocks_ > 1) {
                     const auto wellsForConn = simulator_.vanguard().schedule().getWellsatEnd();