diff --git a/dumux/discretization/cellcentered/mpfa/localassemblerbase.hh b/dumux/discretization/cellcentered/mpfa/localassemblerbase.hh
index 3939f1f1cdca93fa4d535190350c566c611df088..d1f76822045bee375b184231750d97a46361392e 100644
--- a/dumux/discretization/cellcentered/mpfa/localassemblerbase.hh
+++ b/dumux/discretization/cellcentered/mpfa/localassemblerbase.hh
@@ -57,9 +57,11 @@ class InteractionVolumeAssemblerBase
     using Problem = P;
     using FVElementGeometry = EG;
     using ElementVolumeVariables = EV;
-
     using Helper = InteractionVolumeAssemblerHelper;
 
+    template< class IV >
+    using Scalar = typename IV::Traits::MatVecTraits::FaceVector::value_type;
+
  public:
     /*!
      * \brief The constructor.
@@ -97,9 +99,9 @@ class InteractionVolumeAssemblerBase
      * \param getT Lambda to evaluate the scv-wise tensors
      */
     template< class DataHandle, class IV, class TensorFunc >
-    void assembleMatrices(DataHandle& handle, IV& iv, const TensorFunc& getT)
+    void assembleMatrices(DataHandle& handle, IV& iv, const TensorFunc& getT, Scalar<IV> wijZeroThresh = 0.0)
     {
-        DUNE_THROW(Dune::NotImplemented, "Implementation does not provide a assembleMatrices() function");
+        DUNE_THROW(Dune::NotImplemented, "Implementation does not provide an assembleMatrices() function");
     }
 
     /*!
@@ -116,7 +118,7 @@ class InteractionVolumeAssemblerBase
     template< class DataHandle, class IV, class GetU >
     void assembleU(DataHandle& handle, const IV& iv, const GetU& getU)
     {
-        DUNE_THROW(Dune::NotImplemented, "Implementation does not provide a assemble() function for the cell/Dirichlet unknowns");
+        DUNE_THROW(Dune::NotImplemented, "Implementation does not provide an assemble() function for the cell/Dirichlet unknowns");
     }
 
     /*!
diff --git a/dumux/discretization/cellcentered/mpfa/omethod/localassembler.hh b/dumux/discretization/cellcentered/mpfa/omethod/localassembler.hh
index bb5cf6a7fc73c368e4bd762842bfff840fb66083..52b287045f09f45a8563e8398626770f2542722f 100644
--- a/dumux/discretization/cellcentered/mpfa/omethod/localassembler.hh
+++ b/dumux/discretization/cellcentered/mpfa/omethod/localassembler.hh
@@ -258,7 +258,7 @@ private:
 
                     if (otherLocalDofIdx == curLocalDofIdx)
                     {
-                        if (abs(wijk[faceIdx][0][localDir]) < wijZeroThresh)
+                        if (abs(wijk[faceIdx][0][localDir]) <= wijZeroThresh)
                         {
                             if (!curIsDirichlet)
                             {
@@ -322,7 +322,7 @@ private:
 
                             // check for zero transmissibilities (skip if inside has been zero already)
                             if (otherLocalDofIdx == curLocalDofIdx && !insideZeroWij)
-                                if (abs(wijk[faceIdx][idxOnScvf][localDir]) < wijZeroThresh)
+                                if (abs(wijk[faceIdx][idxOnScvf][localDir]) <= wijZeroThresh)
                                     faceMarkers.emplace_back( std::make_pair(curLocalDofIdx, faceIdx) );
 
                             if (!otherLocalScvf.isDirichlet())