diff --git a/test/references/diffusion-reference.vtu b/test/references/diffusion-reference.vtu
index 3c60893747f8bb342f7cbec6181e656fe5963a93..10ab0ea99728f1e6209673122a2d2725c80ca8c6 100644
--- a/test/references/diffusion-reference.vtu
+++ b/test/references/diffusion-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="64" NumberOfPoints="81">
-      <CellData Scalars="global pressure">
-        <DataArray type="Float32" Name="global pressure" NumberOfComponents="1" format="ascii">
+      <CellData Scalars="wetting potential">
+        <DataArray type="Float32" Name="wetting potential" NumberOfComponents="1" format="ascii">
           0.097758 0.12059 0.173 0.197325 0.192325 0.165091 0.106329 0.0401586 0.12059 0.318883 0.47833 0.550023
           0.551477 0.462448 0.309603 0.108657 0.173 0.47833 0.69324 0.819422 0.817403 0.691356 0.465378 0.160518
           0.197325 0.550023 0.819422 0.961479 0.959541 0.81798 0.548266 0.188515 0.192325 0.551477 0.817403 0.959541