diff --git a/vcg/simplex/face/component_ocf.h b/vcg/simplex/face/component_ocf.h
index 98d07fac..58b8b92a 100644
--- a/vcg/simplex/face/component_ocf.h
+++ b/vcg/simplex/face/component_ocf.h
@@ -524,8 +524,8 @@ public:
   template <class RightFaceType>
   void ImportData(const RightFaceType & rightF){
     if((*this).IsCurvatureDirEnabled() && rightF.IsCurvatureDirEnabled()) {
-      PD1() = rightF.cPD1();
-      PD2() = rightF.cPD2();
+      PD1().Import(rightF.cPD1());
+      PD2().Import(rightF.cPD2());
       K1() = rightF.cK1();
       K2() = rightF.cK2();
     }
diff --git a/vcg/simplex/vertex/component_ocf.h b/vcg/simplex/vertex/component_ocf.h
index 8de4c32b..00c53d62 100644
--- a/vcg/simplex/vertex/component_ocf.h
+++ b/vcg/simplex/vertex/component_ocf.h
@@ -486,10 +486,10 @@ public:
   void ImportData(const RightVertexType & rightV){
     if((*this).IsCurvatureDirEnabled() && rightV.IsCurvatureDirEnabled())
     {
-      (*this).PD1() = rightV.cPD1();
-      (*this).PD2() = rightV.cPD2();
-      (*this).K1() = rightV.cK1();
-      (*this).K2() = rightV.cK2();
+      (*this).PD1().Import(rightV.cPD1());
+      (*this).PD2().Import(rightV.cPD2());
+      (*this).K1()=rightV.cK1();
+      (*this).K2()=rightV.cK2();
     }
     TT::ImportData(rightV);
   }