diff --git a/src/libslic3r/SLAPrint.cpp b/src/libslic3r/SLAPrint.cpp
index 569d22501e..b50e5233cb 100644
--- a/src/libslic3r/SLAPrint.cpp
+++ b/src/libslic3r/SLAPrint.cpp
@@ -1182,8 +1182,8 @@ sla::DrainHoles SLAPrintObject::transformed_drainhole_points() const
 {
     assert(m_model_object != nullptr);
     auto pts = m_model_object->sla_drain_holes;
-    auto tr = trafo().cast<float>();
-    auto sc = m_model_object->instances.front()->get_scaling_factor().cast<float>();
+    const auto tr = trafo().cast<float>();
+    const Vec3f sc = m_model_object->instances.front()->get_scaling_factor().cast<float>();
     for (sla::DrainHole &hl : pts) {
         hl.pos = tr * hl.pos;
         hl.normal = tr * hl.normal - tr.translation();
diff --git a/src/slic3r/GUI/Selection.cpp b/src/slic3r/GUI/Selection.cpp
index 34063c1ca9..efb8ef87e9 100644
--- a/src/slic3r/GUI/Selection.cpp
+++ b/src/slic3r/GUI/Selection.cpp
@@ -3166,7 +3166,7 @@ void Selection::paste_objects_from_clipboard()
         if (shift_all(0) != 0 || shift_all(1) != 0) {
             // BBS: if multiple objects are selected, move them as a whole after copy
             if (i == 0) empty_cell_all = wxGetApp().plater()->canvas3D()->get_nearest_empty_cell({start_point(0), start_point(1)}, {bbox.size()(0)+1,bbox.size()(1)+1});
-            auto instance_shift = src_object->instances.front()->get_offset() - src_objects[0]->instances.front()->get_offset();
+            const Vec3d instance_shift = src_object->instances.front()->get_offset() - src_objects[0]->instances.front()->get_offset();
             displacement        = {shift_all.x() + empty_cell_all.x() + instance_shift.x(), shift_all.y() + empty_cell_all.y() + instance_shift.y(), start_offset(2)};
         } else {
             // BBS: if only one object is copied, find an empty cell to put it