--- a/+multiblock/DiffOp.m	Wed Aug 07 13:28:21 2019 +0200
+++ b/+multiblock/DiffOp.m	Wed Aug 07 15:23:42 2019 +0200
@@ -129,11 +129,11 @@
 
         % Get a boundary operator specified by opName for the given boundary/BoundaryGroup
         function op = getBoundaryOperator(obj, opName, boundary)
+
             switch class(boundary)
                 case 'cell'
-                    localOpName = [opName '_' boundary{2}];
                     blockId = boundary{1};
-                    localOp = obj.diffOps{blockId}.(localOpName);
+                    localOp = obj.diffOps{blockId}.getBoundaryOperator(opName, boundary{2});
 
                     div = {obj.blockmatrixDiv{1}, size(localOp,2)};
                     blockOp = blockmatrix.zero(div);
@@ -151,13 +151,10 @@
         end
 
         function op = getBoundaryQuadrature(obj, boundary)
-            opName = 'H';
             switch class(boundary)
                 case 'cell'
-                    localOpName = [opName '_' boundary{2}];
                     blockId = boundary{1};
-                    op = obj.diffOps{blockId}.(localOpName);
-
+                    op = obj.diffOps{blockId}.getBoundaryQuadrature(boundary{2});
                     return
                 case 'multiblock.BoundaryGroup'
                     N = length(boundary);