diff --git a/src/finiteVolume/fields/fvPatchFields/derived/swirlFlowRateInletVelocity/swirlFlowRateInletVelocityFvPatchVectorField.H b/src/finiteVolume/fields/fvPatchFields/derived/swirlFlowRateInletVelocity/swirlFlowRateInletVelocityFvPatchVectorField.H
index 3a0577c5de..87f7af8b70 100644
--- a/src/finiteVolume/fields/fvPatchFields/derived/swirlFlowRateInletVelocity/swirlFlowRateInletVelocityFvPatchVectorField.H
+++ b/src/finiteVolume/fields/fvPatchFields/derived/swirlFlowRateInletVelocity/swirlFlowRateInletVelocityFvPatchVectorField.H
@@ -42,8 +42,8 @@ Usage
         Property     | Description             | Required    | Default value
         phi          | flux field name         | no          | phi
         rho          | density field name      | no          | rho
-        origin       | origin of rotation in Cartesian co-ordinates | no |
-        axis         | axis of rotation        | no          |
+        origin       | origin of rotation      | no          | patch centre
+        axis         | axis of rotation        | no          | -patch normal
         flowRate     | flow rate profile       | yes         |
         rpm          | rotational speed profile | yes        |
     \endtable