diff --git a/vcg/space/index/grid_util.h b/vcg/space/index/grid_util.h
index 79e32845..7077de73 100644
--- a/vcg/space/index/grid_util.h
+++ b/vcg/space/index/grid_util.h
@@ -107,10 +107,9 @@ public:
     template <class OtherScalarType>
     inline void IPiToPf(const Point3i & pi,  Point3<OtherScalarType> &p ) const
     {
-        p[0] = ((OtherScalarType)pi[0])*voxel[0];
-        p[1] = ((OtherScalarType)pi[1])*voxel[1];
-        p[2] = ((OtherScalarType)pi[2])*voxel[2];
-        p += bbox.min;
+        p[0] = bbox.min[0] + ((OtherScalarType)pi[0])*voxel[0];
+        p[1] = bbox.min[1] + ((OtherScalarType)pi[1])*voxel[1];
+        p[2] = bbox.min[2] + ((OtherScalarType)pi[2])*voxel[2];
     }
     /* Returns the matrix that applied to a point in grid space
      * transforms it in the original space.
diff --git a/wrap/gl/pick.h b/wrap/gl/pick.h
index 4cc98703..f1b5f28c 100644
--- a/wrap/gl/pick.h
+++ b/wrap/gl/pick.h
@@ -217,7 +217,7 @@ public:
     float LocalEpsilon = 0.001f;
     for(size_t i =0;i<result.size();++i)
     {
-      Point3f p = Proj(M,vp,Point3f::Construct(Barycenter(*(result[i]))));
+      Point3f p = Proj(M,vp,Point3f::Construct(Barycenter(*(result[i])))) ;
       if(p[0] >=0 && p[0]<screenW && p[1] >=0 && p[1]<screenH)
       {
         float bufZ = buffer[int(p[0])+int(p[1])*screenW];