diff --git a/tutorials/lagrangian/MPPICFoam/injectionChannel/constant/kinematicCloudProperties b/tutorials/lagrangian/MPPICFoam/injectionChannel/constant/kinematicCloudProperties
index 0055095d8e4f1f886e282695b4d6d0912c355537..d3a10f2c5a2b543ab34977d92b31f17e482b7bac 100644
--- a/tutorials/lagrangian/MPPICFoam/injectionChannel/constant/kinematicCloudProperties
+++ b/tutorials/lagrangian/MPPICFoam/injectionChannel/constant/kinematicCloudProperties
@@ -106,7 +106,7 @@ subModels
             type            patchInjection;
             parcelBasisType fixed;
             patchName       upperInlet;
-            U0              (18.7939 6.8404 0);
+            U0              (18.7939 -6.8404 0);
             nParticle       1;
             parcelsPerSecond 1390885;
             sizeDistribution