diff --git a/tutorials/cfdemSolverPimple/PeriodicBox/CFD/constant/couplingProperties b/tutorials/cfdemSolverPimple/PeriodicBox/CFD/constant/couplingProperties
index 81a94629..60f1463e 100755
--- a/tutorials/cfdemSolverPimple/PeriodicBox/CFD/constant/couplingProperties
+++ b/tutorials/cfdemSolverPimple/PeriodicBox/CFD/constant/couplingProperties
@@ -45,6 +45,8 @@ clockModel off;
 
 smoothingModel constDiffSmoothing;
 
+getParticleDensities true;
+
 forceModels
 (
     BeetstraDrag