diff --git a/flowRateTiltedInletVelocityFvPatchVectorField.C b/flowRateTiltedInletVelocityFvPatchVectorField.C
index 5da5374..1ea94af 100644
--- a/flowRateTiltedInletVelocityFvPatchVectorField.C
+++ b/flowRateTiltedInletVelocityFvPatchVectorField.C
@@ -172,9 +172,9 @@ void Foam::flowRateTiltedInletVelocityFvPatchVectorField::updateCoeffs()
     const scalar t = db().time().timeOutputValue();
 
     // a simpler way of doing this would be nice
-    const scalar avgU = -flowRate_->value(t)/gSum(patch().magSf());
+    const scalar avgU = flowRate_->value(t)/gSum(patch().magSf());
 
-    vectorField n(patch().nf());
+    vectorField n(-patch().nf());
 
     scalarField B(Foam::asin(n & axis_));