diff --git a/src/dynamicFaMesh/interfaceTrackingFvMesh/fvPatchFields/freeSurfacePressure/freeSurfacePressureFvPatchScalarField.H b/src/dynamicFaMesh/interfaceTrackingFvMesh/fvPatchFields/freeSurfacePressure/freeSurfacePressureFvPatchScalarField.H
index 667a2003081f51b118965132e187116fc81908ce..818ce6ba41b5ec526020e2af2e090a5a38500a88 100644
--- a/src/dynamicFaMesh/interfaceTrackingFvMesh/fvPatchFields/freeSurfacePressure/freeSurfacePressureFvPatchScalarField.H
+++ b/src/dynamicFaMesh/interfaceTrackingFvMesh/fvPatchFields/freeSurfacePressure/freeSurfacePressureFvPatchScalarField.H
@@ -34,7 +34,7 @@ Description
     calculated as:
 
         \f[
-            p = pa - \vec{g} & \vec{r}
+            p = pa - \vec{g} \cdot \vec{r}
         \f]
 
     where