diff --git a/src/libnest2d/include/libnest2d/backends/clipper/geometries.hpp b/src/libnest2d/include/libnest2d/backends/clipper/geometries.hpp
index 57da6ec12..dd80322bc 100644
--- a/src/libnest2d/include/libnest2d/backends/clipper/geometries.hpp
+++ b/src/libnest2d/include/libnest2d/backends/clipper/geometries.hpp
@@ -77,7 +77,7 @@ inline void offset(PolygonImpl& sh, TCoord<PointImpl> distance, const PolygonTag
     #define DISABLE_BOOST_OFFSET
 
     using ClipperLib::ClipperOffset;
-    using ClipperLib::jtMiter;
+    using ClipperLib::jtSquare;
     using ClipperLib::etClosedPolygon;
     using ClipperLib::Paths;
 
@@ -85,8 +85,8 @@ inline void offset(PolygonImpl& sh, TCoord<PointImpl> distance, const PolygonTag
     
     try {
         ClipperOffset offs;
-        offs.AddPath(sh.Contour, jtMiter, etClosedPolygon);
-        offs.AddPaths(sh.Holes, jtMiter, etClosedPolygon);
+        offs.AddPath(sh.Contour, jtSquare, etClosedPolygon);
+        offs.AddPaths(sh.Holes, jtSquare, etClosedPolygon);
         offs.Execute(result, static_cast<double>(distance));
     } catch (ClipperLib::clipperException &) {
         throw GeometryException(GeomErr::OFFSET);
diff --git a/src/libnest2d/include/libnest2d/placers/nfpplacer.hpp b/src/libnest2d/include/libnest2d/placers/nfpplacer.hpp
index 91f04cb93..6cdaadd25 100644
--- a/src/libnest2d/include/libnest2d/placers/nfpplacer.hpp
+++ b/src/libnest2d/include/libnest2d/placers/nfpplacer.hpp
@@ -528,15 +528,12 @@ public:
 
     static inline double overfit(const Box& bb, const Box& bin)
     {
-        auto Bw = bin.width();
-        auto Bh = bin.height();
-        auto mBw = -Bw;
-        auto mBh = -Bh;
-        auto wdiff = double(bb.width()) + mBw;
-        auto hdiff = double(bb.height()) + mBh;
-        double diff = 0;
-        if(wdiff > 0) diff += wdiff;
-        if(hdiff > 0) diff += hdiff;
+        auto wdiff = TCompute<RawShape>(bb.width()) - bin.width();
+        auto hdiff = TCompute<RawShape>(bb.height()) - bin.height();
+        double diff = .0;
+        if(wdiff > 0) diff += double(wdiff);
+        if(hdiff > 0) diff += double(hdiff);
+
         return diff;
     }
 
diff --git a/src/libslic3r/Arrange.cpp b/src/libslic3r/Arrange.cpp
index de6b34c1f..6ae7dd6a2 100644
--- a/src/libslic3r/Arrange.cpp
+++ b/src/libslic3r/Arrange.cpp
@@ -396,11 +396,14 @@ template<> std::function<double(const Item&)> AutoArranger<Box>::get_objfn()
         double score = std::get<0>(result);
         auto& fullbb = std::get<1>(result);
         
-        double miss = Placer::overfit(fullbb, m_bin);
+        auto bin = m_bin;
+        sl::offset(bin, -EPSILON * (m_bin.width() + m_bin.height()));
+
+        double miss = Placer::overfit(fullbb, bin);
         miss = miss > 0? miss : 0;
         score += miss*miss;
         
-        return score;    
+        return score;
     };
 }