diff --git a/Tests/Data/TH2M/TH2/heatpipe/PETSc/heat_pipe_strict.prj b/Tests/Data/TH2M/TH2/heatpipe/PETSc/heat_pipe_strict.prj
index b39ad01dfc917f668182651669c89b2c60eed914..ac2b65892a472f04f2638249b7a3aa77127c18d6 100644
--- a/Tests/Data/TH2M/TH2/heatpipe/PETSc/heat_pipe_strict.prj
+++ b/Tests/Data/TH2M/TH2/heatpipe/PETSc/heat_pipe_strict.prj
@@ -230,6 +230,11 @@
                 </phase>
             </phases>
             <properties>
+                <property>
+                    <name>tortuosity</name>
+                    <type>Constant</type>
+                    <value>1.0</value>
+                </property>
                 <property>
                     <name>permeability</name>
                     <type>Constant</type>