diff --git a/Tests/Data/RichardsMechanics/mechanics_linear.prj b/Tests/Data/RichardsMechanics/mechanics_linear.prj
index 0fc0c797e1e5ba158045eeeb0589b6c732eb12d3..e6b12323ca6bfae296acb408d5234cb6a859b6bc 100644
--- a/Tests/Data/RichardsMechanics/mechanics_linear.prj
+++ b/Tests/Data/RichardsMechanics/mechanics_linear.prj
@@ -174,7 +174,7 @@
         <parameter>
             <name>phi0</name>
             <type>Constant</type>
-            <value>0</value>
+            <value>0.5</value>
         </parameter>
         <!-- Model parameters -->
         <parameter>