diff --git a/src/io.jl b/src/io.jl
index 895efbb0..9ff1b328 100644
--- a/src/io.jl
+++ b/src/io.jl
@@ -16,8 +16,10 @@ exports grid and optional provided data as a vtk file
 - `grid`: grid
 
 Each '(key, value)' pair adds another data entry to the vtk file via WriteVTK functionality.
+
+For the arguments 'append' and 'compress', see documentation of vtk_grid of WriteVTK.
 """
-function writeVTK(filename::String, grid::ExtendableGrid{Tc, Ti}; kwargs...) where {Tc, Ti}
+function writeVTK(filename::String, grid::ExtendableGrid{Tc, Ti}; append = false, compress = false, kwargs...) where {Tc, Ti}
     ncells = num_cells(grid)   # get number of cells in grid
     coords = grid[Coordinates] # get coordinates 
     cells = grid[CellNodes]   # get cell-node list
@@ -31,7 +33,7 @@ function writeVTK(filename::String, grid::ExtendableGrid{Tc, Ti}; kwargs...) whe
         vtk_cells[icell] = MeshCell(VTKCellType(cell_geo[icell]), view(cells, :, icell))
     end
 
-    vtk_grid(filename, coords, vtk_cells) do vtk
+    vtk_grid(filename, coords, vtk_cells, append = append, compress = compress) do vtk
         for (key, value) in kwargs
             vtk[String(key)] = value
         end
diff --git a/test/runtests.jl b/test/runtests.jl
index 45e212a9..d73338d9 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -416,7 +416,7 @@ end
         sha256(f)
     end |> bytes2hex
 
-    @test sha_code == "f7e86e426aa6673699bd470f6db328a177eabdee74c71cfa6a855a2507b4f1bb"
+    @test sha_code == "9596c59f6b0870dd4a42a7a48725c2257f260757e15cc5ac433e5e8e235659d9"
 end