diff --git a/GetDDM/getddm.html b/GetDDM/getddm.html
index c6e95e9203c3b56b075c9a0ab82f4b2fa10572ea..28e455ea8f4f6cafd82fa131af98523f73bcfde8 100644
--- a/GetDDM/getddm.html
+++ b/GetDDM/getddm.html
@@ -74,11 +74,10 @@ Wave Problems</h1>
   GetDP</a>
   and <a href="https://gitlab.onelab.info/gmsh/gmsh/wikis/Gmsh-compilation">Gmsh</a>
   with MPI support
-  <li>Run the models on a computer cluster with MPI, e.g. for 100 CPUs
-    <pre>
-      mpirun -np 100 gmsh models/GetDDM/waveguide3d.geo -
-      mpirun -np 100 getdp models/GetDDM/waveguide3d.pro -solve DDM
-    </pre>
+  <li>Run the models on a computer cluster with MPI, e.g. the <code>waveguide3d</code>
+    model on 100 CPUs, using:
+    <pre>mpirun -np 100 gmsh -setnumber N_DOM 100 waveguide3d.geo -
+mpirun -np 100 getdp -setnumber N_DOM 100 waveguide3d.pro -solve DDM</pre>
 </ol>
 <p>
   The actual commands will depend on your particular MPI setup. Sample scripts