diff --git a/vcg/complex/algorithms/parametrization/tangent_field_operators.h b/vcg/complex/algorithms/parametrization/tangent_field_operators.h
index 0ed1caf6..3da1a33a 100644
--- a/vcg/complex/algorithms/parametrization/tangent_field_operators.h
+++ b/vcg/complex/algorithms/parametrization/tangent_field_operators.h
@@ -666,7 +666,7 @@ public:
         CoordType dirR=vcg::tri::CrossField<MeshType>::Rotate(f0,f1,dir0);
         ///then get the closest upf to K*PI/2 rotations
         CoordType dir1=f1.cPD1();
-        CoordType ret=vcg::tri::CrossField<MeshType>::K_PI(dirR,dir1,f1.cN());
+        CoordType ret=vcg::tri::CrossField<MeshType>::K_PI(dir1,dirR,f1.cN());
         return ret;
     }