diff --git a/src/waves/waveModels/Airy/Airy.C b/src/waves/waveModels/Airy/Airy.C
index 5cc8de6cf0..bea8cb9856 100644
--- a/src/waves/waveModels/Airy/Airy.C
+++ b/src/waves/waveModels/Airy/Airy.C
@@ -91,7 +91,7 @@ Foam::tmp<Foam::vector2DField> Foam::waveModels::Airy::vi
     else
     {
         const scalar kd = k()*depth();
-        const scalarField kdz(max(0.0, kd - mag(kz)));
+        const scalarField kdz(max(scalar(0), kd - mag(kz)));
         return i*zip(cosh(i*kdz)*cos(i*phi), sinh(i*kdz)*sin(i*phi))/sinh(kd);
     }
 }
diff --git a/src/waves/waveModels/solitary/solitary.C b/src/waves/waveModels/solitary/solitary.C
index 692d1fd9e0..5143c4034d 100644
--- a/src/waves/waveModels/solitary/solitary.C
+++ b/src/waves/waveModels/solitary/solitary.C
@@ -132,7 +132,7 @@ Foam::tmp<Foam::vector2DField> Foam::waveModels::solitary::velocity
 ) const
 {
     const scalar A = alpha(t);
-    const scalarField Z(max(0.0, 1 - mag(xz.component(1)/depth())));
+    const scalarField Z(max(scalar(0), 1 - mag(xz.component(1)/depth())));
     const scalarField P(Pi(t, u, xz.component(0)));
 
     return