diff --git a/Tests/Data/RichardsMechanics/LiakopoulosHM/liakopoulos_QN.prj b/Tests/Data/RichardsMechanics/LiakopoulosHM/liakopoulos_QN.prj
index eac7491ea6d6db77af0b1d9b5c16c58f1a83ae78..d650a131fe8fb83c718f22429104e1312d721f0e 100644
--- a/Tests/Data/RichardsMechanics/LiakopoulosHM/liakopoulos_QN.prj
+++ b/Tests/Data/RichardsMechanics/LiakopoulosHM/liakopoulos_QN.prj
@@ -455,7 +455,7 @@
         <vtkdiff>
             <regex>liakopoulos_QN_t_.*.vtu</regex>
             <field>NodalForces</field>
-            <absolute_tolerance>8e-9</absolute_tolerance>
+            <absolute_tolerance>2e-8</absolute_tolerance>
             <relative_tolerance>0</relative_tolerance>
         </vtkdiff>
         <vtkdiff>