diff --git a/tutorials/multiphase/twoPhaseEulerFoam/RAS/fluidisedBed/0/alpha.air b/tutorials/multiphase/twoPhaseEulerFoam/RAS/fluidisedBed/0/alpha.air
index 9a4d3aea6cad96d8401c7af22e2004860edf22c0..288160cdf0cb17779eea8e5a9edaf82b5724b03d 100644
--- a/tutorials/multiphase/twoPhaseEulerFoam/RAS/fluidisedBed/0/alpha.air
+++ b/tutorials/multiphase/twoPhaseEulerFoam/RAS/fluidisedBed/0/alpha.air
@@ -6027,8 +6027,7 @@ boundaryField
 {
     inlet
     {
-        type            fixedValue;
-        value           uniform 1;
+        type            zeroGradient;
     }
     outlet
     {
diff --git a/tutorials/multiphase/twoPhaseEulerFoam/RAS/fluidisedBed/0/alpha.air.org b/tutorials/multiphase/twoPhaseEulerFoam/RAS/fluidisedBed/0/alpha.air.org
index 29db06c78367cb29c5f8b9b9bdc7ca58ee1db9c6..6292e5ffc082798b8a816da47d97b8c41b755c61 100644
--- a/tutorials/multiphase/twoPhaseEulerFoam/RAS/fluidisedBed/0/alpha.air.org
+++ b/tutorials/multiphase/twoPhaseEulerFoam/RAS/fluidisedBed/0/alpha.air.org
@@ -22,8 +22,7 @@ boundaryField
 {
     inlet
     {
-        type            fixedValue;
-        value           uniform 1;
+        type            zeroGradient;
     }
 
     outlet