diff --git a/src/finiteVolume/fields/fvPatchFields/derived/fixedNormalInletOutletVelocity/fixedNormalInletOutletVelocityFvPatchVectorField.H b/src/finiteVolume/fields/fvPatchFields/derived/fixedNormalInletOutletVelocity/fixedNormalInletOutletVelocityFvPatchVectorField.H
index 99d8d4c213..758300a21a 100644
--- a/src/finiteVolume/fields/fvPatchFields/derived/fixedNormalInletOutletVelocity/fixedNormalInletOutletVelocityFvPatchVectorField.H
+++ b/src/finiteVolume/fields/fvPatchFields/derived/fixedNormalInletOutletVelocity/fixedNormalInletOutletVelocityFvPatchVectorField.H
@@ -104,7 +104,9 @@ class fixedNormalInletOutletVelocityFvPatchVectorField
 :
     public directionMixedFvPatchVectorField
 {
-    // Private data
+protected:
+
+    // Protected data
 
         //- Flux field name
         word phiName_;