diff --git a/vcg/complex/algorithms/dual_meshing.h b/vcg/complex/algorithms/dual_meshing.h
index 43c78542..14c17f0e 100644
--- a/vcg/complex/algorithms/dual_meshing.h
+++ b/vcg/complex/algorithms/dual_meshing.h
@@ -127,6 +127,7 @@ public:
         vcg::tri::RequirePolygonalMesh(primal);
         vcg::tri::RequirePolygonalMesh(dual);
         vcg::tri::RequireFFAdjacency(primal);
+        vcg::tri::RequirePerFaceQuality(dual);
 
         vcg::tri::UpdateTopology<PolyMeshType>::FaceFace(primal);
         vcg::tri::UpdateFlags<PolyMeshType>::VertexBorderFromFaceAdj(primal);