diff --git a/applications/solvers/multiphase/compressibleLesInterFoam/alphaEqns.H b/applications/solvers/multiphase/compressibleLesInterFoam/alphaEqns.H
index 12eea31127..819cd0f538 100644
--- a/applications/solvers/multiphase/compressibleLesInterFoam/alphaEqns.H
+++ b/applications/solvers/multiphase/compressibleLesInterFoam/alphaEqns.H
@@ -28,7 +28,7 @@
             ),
             // Divergence term is handled explicitly to be
             // consistent with the explicit transport solution
-            divU*min(alpha1, 1.0)
+            divU*min(alpha1, scalar(1))
         );
 
         forAll(dgdt, celli)
diff --git a/applications/solvers/multiphase/compressibleLesInterFoam/createFields.H b/applications/solvers/multiphase/compressibleLesInterFoam/createFields.H
index c6dd6c0f48..6fa5049de4 100644
--- a/applications/solvers/multiphase/compressibleLesInterFoam/createFields.H
+++ b/applications/solvers/multiphase/compressibleLesInterFoam/createFields.H
@@ -140,7 +140,7 @@
     );
 
     volScalarField dgdt =
-        pos(alpha2)*fvc::div(phi)/max(alpha2, 0.0001);
+        pos(alpha2)*fvc::div(phi)/max(alpha2, scalar(0.0001));
 
     // Construct interface from alpha1 distribution
     interfaceProperties interface(alpha1, U, twoPhaseProperties);
diff --git a/applications/solvers/multiphase/compressibleLesInterFoam/pEqn.H b/applications/solvers/multiphase/compressibleLesInterFoam/pEqn.H
index b794d4df2d..ebf24498ad 100644
--- a/applications/solvers/multiphase/compressibleLesInterFoam/pEqn.H
+++ b/applications/solvers/multiphase/compressibleLesInterFoam/pEqn.H
@@ -40,7 +40,10 @@
 
         solve
         (
-            (max(alpha1, 0.0)*(psi1/rho1) + max(alpha2, 0.0)*(psi2/rho2))
+            (
+                max(alpha1, scalar(0))*(psi1/rho1)
+              + max(alpha2, scalar(0))*(psi2/rho2)
+            )
            *pdEqnComp()
           + pdEqnIncomp
         );