diff --git a/opm/simulators/linalg/bda/opencl/BILU0.cpp b/opm/simulators/linalg/bda/opencl/BILU0.cpp
index b63f5959b..be1066652 100644
--- a/opm/simulators/linalg/bda/opencl/BILU0.cpp
+++ b/opm/simulators/linalg/bda/opencl/BILU0.cpp
@@ -136,8 +136,8 @@ bool BILU0<block_size>::analyze_matrix(BlockedMatrix *mat, BlockedMatrix *jacMat
     invDiagVals.resize(mat->Nb * bs * bs);
 
 #if CHOW_PATEL
-    Lmat = std::make_unique<BlockedMatrix<block_size> >(mat->Nb, (mat->nnzbs - mat->Nb) / 2);
-    Umat = std::make_unique<BlockedMatrix<block_size> >(mat->Nb, (mat->nnzbs - mat->Nb) / 2);
+    Lmat = std::make_unique<BlockedMatrix>(mat->Nb, (mat->nnzbs - mat->Nb) / 2, block_size);
+    Umat = std::make_unique<BlockedMatrix>(mat->Nb, (mat->nnzbs - mat->Nb) / 2, block_size);
 #endif
 
     s.invDiagVals = cl::Buffer(*context, CL_MEM_READ_WRITE, sizeof(double) * bs * bs * mat->Nb);
@@ -223,9 +223,9 @@ bool BILU0<block_size>::create_preconditioner(BlockedMatrix *mat, BlockedMatrix
     }
 
 #if CHOW_PATEL
-    chowPatelIlu.decomposition(queue, context,
+    chowPatelIlu.decomposition(queue.get(), context.get(),
                                LUmat.get(), Lmat.get(), Umat.get(),
-                               invDiagVals, diagIndex,
+                               invDiagVals.data(), diagIndex,
                                s.diagIndex, s.invDiagVals,
                                s.Lvals, s.Lcols, s.Lrows,
                                s.Uvals, s.Ucols, s.Urows);
diff --git a/opm/simulators/linalg/bda/opencl/kernels/ILU_apply1.cl b/opm/simulators/linalg/bda/opencl/kernels/ILU_apply1.cl
index fb067995d..6efa8e30b 100644
--- a/opm/simulators/linalg/bda/opencl/kernels/ILU_apply1.cl
+++ b/opm/simulators/linalg/bda/opencl/kernels/ILU_apply1.cl
@@ -1,6 +1,7 @@
 /// ILU apply part 1: forward substitution.
 /// Solves L*x=y where L is a lower triangular sparse blocked matrix.
 /// Here, L is it's own BSR matrix.
+/// Only used with ChowPatelIlu.
 __kernel void ILU_apply1(
     __global const double *LUvals,
     __global const unsigned int *LUcols,
diff --git a/opm/simulators/linalg/bda/opencl/kernels/ILU_apply2.cl b/opm/simulators/linalg/bda/opencl/kernels/ILU_apply2.cl
index 315488f58..6300740c5 100644
--- a/opm/simulators/linalg/bda/opencl/kernels/ILU_apply2.cl
+++ b/opm/simulators/linalg/bda/opencl/kernels/ILU_apply2.cl
@@ -1,6 +1,7 @@
 /// ILU apply part 2: backward substitution.
 /// Solves U*x=y where U is an upper triangular sparse blocked matrix.
 /// Here, U is it's own BSR matrix.
+/// Only used with ChowPatelIlu.
 __kernel void ILU_apply2(
     __global const double *LUvals,
     __global const int *LUcols,