diff --git a/dumux/assembly/fclocalassembler.hh b/dumux/assembly/fclocalassembler.hh
index f09a175c57a822290987259f4fbf1aa1ccb0b3f7..33af2d0bcb98077137850b619f6312ed26da606e 100644
--- a/dumux/assembly/fclocalassembler.hh
+++ b/dumux/assembly/fclocalassembler.hh
@@ -358,7 +358,7 @@ public:
         //////////////////////////////////////////////////////////////////////////////////////////////////
 
         // one residual per element facet
-        const auto numElementResiduals = element.subEntities(1);
+        const auto numElementResiduals = fvGeometry.numScv();
 
         // create the vector storing the partial derivatives
         ElementResidualVector partialDerivs(numElementResiduals);
@@ -573,7 +573,7 @@ public:
         auto elemSol = elementSolution(element, curSol, fvGeometry.gridGeometry());
 
         // create the vector storing the partial derivatives
-        ElementResidualVector partialDerivs(element.subEntities(1));
+        ElementResidualVector partialDerivs(fvGeometry.numScv());
 
         // calculation of the derivatives
         for (const auto& scv : scvs(fvGeometry))